./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/memory-model/2SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/memory-model/2SB.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB --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 cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:10:58,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:10:58,192 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:10:58,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:10:58,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:10:58,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:10:58,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:10:58,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:10:58,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:10:58,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:10:58,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:10:58,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:10:58,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:10:58,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:10:58,231 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:10:58,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:10:58,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:10:58,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:10:58,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:10:58,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:10:58,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:10:58,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:10:58,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:10:58,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:10:58,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:10:58,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:10:58,233 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:10:58,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:10:58,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:10:58,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:58,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:58,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:58,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:58,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:10:58,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:58,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:58,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:58,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:58,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:10:58,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:10:58,235 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:10:58,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:10:58,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:10:58,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:10:58,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:10:58,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:10:58,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:10:58,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:10:58,237 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_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB 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 -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 [2024-11-28 04:10:58,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:10:58,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:10:58,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:10:58,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:10:58,628 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:10:58,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memory-model/2SB.i [2024-11-28 04:11:02,256 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/data/4128ae729/25f1d8cc892949c9a73bcd438c28578d/FLAGf3e42e0b9 [2024-11-28 04:11:02,636 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:11:02,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/sv-benchmarks/c/memory-model/2SB.i [2024-11-28 04:11:02,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/data/4128ae729/25f1d8cc892949c9a73bcd438c28578d/FLAGf3e42e0b9 [2024-11-28 04:11:02,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/data/4128ae729/25f1d8cc892949c9a73bcd438c28578d [2024-11-28 04:11:02,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:11:02,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:11:02,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:11:02,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:11:02,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:11:02,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:11:02" (1/1) ... [2024-11-28 04:11:02,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c19a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:02, skipping insertion in model container [2024-11-28 04:11:02,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:11:02" (1/1) ... [2024-11-28 04:11:02,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:11:03,160 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_a0881210-81a4-47f0-96d7-d22ac8514077/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-11-28 04:11:03,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:11:03,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:11:03,326 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_a0881210-81a4-47f0-96d7-d22ac8514077/sv-benchmarks/c/memory-model/2SB.i[13547,13560] [2024-11-28 04:11:03,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:11:03,349 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:11:03,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03 WrapperNode [2024-11-28 04:11:03,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:11:03,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:11:03,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:11:03,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:11:03,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,508 INFO L138 Inliner]: procedures = 27, calls = 414, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 923 [2024-11-28 04:11:03,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:11:03,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:11:03,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:11:03,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:11:03,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,543 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,613 INFO L175 MemorySlicer]: Split 310 memory accesses to 14 slices as follows [13, 13, 11, 10, 15, 40, 10, 48, 3, 12, 10, 37, 76, 12]. 25 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [5, 5, 0, 1, 0, 0, 0, 0, 0, 10, 0, 0, 0, 5]. The 117 writes are split as follows [2, 2, 5, 3, 5, 20, 5, 10, 2, 1, 5, 15, 40, 2]. [2024-11-28 04:11:03,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,705 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:11:03,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:11:03,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:11:03,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:11:03,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (1/1) ... [2024-11-28 04:11:03,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:03,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:03,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:11:03,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:11:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-28 04:11:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-28 04:11:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-28 04:11:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-28 04:11:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-28 04:11:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-28 04:11:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-28 04:11:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-28 04:11:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:11:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:11:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 04:11:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 04:11:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-28 04:11:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:11:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:11:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-28 04:11:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2024-11-28 04:11:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:11:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-28 04:11:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-28 04:11:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:11:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:11:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:11:04,221 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:11:04,224 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:11:05,666 INFO L? ?]: Removed 146 outVars from TransFormulas that were not future-live. [2024-11-28 04:11:05,667 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:11:05,692 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:11:05,693 INFO L312 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-28 04:11:05,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:05 BoogieIcfgContainer [2024-11-28 04:11:05,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:11:05,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:11:05,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:11:05,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:11:05,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:11:02" (1/3) ... [2024-11-28 04:11:05,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d4eb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:11:05, skipping insertion in model container [2024-11-28 04:11:05,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:03" (2/3) ... [2024-11-28 04:11:05,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d4eb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:11:05, skipping insertion in model container [2024-11-28 04:11:05,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:05" (3/3) ... [2024-11-28 04:11:05,709 INFO L128 eAbstractionObserver]: Analyzing ICFG 2SB.i [2024-11-28 04:11:05,727 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:11:05,729 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 2SB.i that has 8 procedures, 176 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 04:11:05,867 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:11:05,887 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;@10863c57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:11:05,887 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:11:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 156 states have internal predecessors, (234), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:11:05,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:05,906 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:05,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:05,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1723176391, now seen corresponding path program 1 times [2024-11-28 04:11:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538186147] [2024-11-28 04:11:05,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538186147] [2024-11-28 04:11:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538186147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:06,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:06,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:06,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89760508] [2024-11-28 04:11:06,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:06,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:06,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:06,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:06,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:06,664 INFO L87 Difference]: Start difference. First operand has 176 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 156 states have internal predecessors, (234), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:06,750 INFO L93 Difference]: Finished difference Result 350 states and 526 transitions. [2024-11-28 04:11:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2024-11-28 04:11:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:06,766 INFO L225 Difference]: With dead ends: 350 [2024-11-28 04:11:06,766 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 04:11:06,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:06,776 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:06,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 452 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 04:11:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2024-11-28 04:11:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 146 states have internal predecessors, (185), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-11-28 04:11:06,858 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 48 [2024-11-28 04:11:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:06,858 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-11-28 04:11:06,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-11-28 04:11:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:11:06,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:06,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:06,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:11:06,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:06,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash -988987192, now seen corresponding path program 1 times [2024-11-28 04:11:06,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:06,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373532266] [2024-11-28 04:11:06,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:07,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373532266] [2024-11-28 04:11:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373532266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332680589] [2024-11-28 04:11:07,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:07,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:07,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:07,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:07,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:11:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:07,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:07,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:11:07,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332680589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326757842] [2024-11-28 04:11:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:07,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:07,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:07,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:07,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:07,785 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:07,856 INFO L93 Difference]: Finished difference Result 326 states and 421 transitions. [2024-11-28 04:11:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:07,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-28 04:11:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:07,862 INFO L225 Difference]: With dead ends: 326 [2024-11-28 04:11:07,863 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 04:11:07,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:07,865 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 1 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:07,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 417 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 04:11:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2024-11-28 04:11:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.282758620689655) internal successors, (186), 147 states have internal predecessors, (186), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2024-11-28 04:11:07,893 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 51 [2024-11-28 04:11:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:07,895 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2024-11-28 04:11:07,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2024-11-28 04:11:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:11:07,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:07,900 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:07,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:11:08,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:08,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:08,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1595099504, now seen corresponding path program 1 times [2024-11-28 04:11:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:08,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865399711] [2024-11-28 04:11:08,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:08,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:11:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:08,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865399711] [2024-11-28 04:11:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865399711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631431319] [2024-11-28 04:11:08,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:08,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:08,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:11:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:08,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:08,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:11:08,855 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:08,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631431319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:08,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:08,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:08,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810686589] [2024-11-28 04:11:08,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:08,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:08,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:08,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:08,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:08,858 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:08,914 INFO L93 Difference]: Finished difference Result 315 states and 405 transitions. [2024-11-28 04:11:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-28 04:11:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:08,917 INFO L225 Difference]: With dead ends: 315 [2024-11-28 04:11:08,917 INFO L226 Difference]: Without dead ends: 174 [2024-11-28 04:11:08,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:08,919 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 6 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:08,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 410 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-28 04:11:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2024-11-28 04:11:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 146 states have (on average 1.2808219178082192) internal successors, (187), 148 states have internal predecessors, (187), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 215 transitions. [2024-11-28 04:11:08,936 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 215 transitions. Word has length 55 [2024-11-28 04:11:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:08,936 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 215 transitions. [2024-11-28 04:11:08,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 215 transitions. [2024-11-28 04:11:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:11:08,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:08,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:08,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:09,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:09,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:09,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash 299667590, now seen corresponding path program 1 times [2024-11-28 04:11:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:09,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132596846] [2024-11-28 04:11:09,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:11:09,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132596846] [2024-11-28 04:11:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132596846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:09,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756676514] [2024-11-28 04:11:09,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:09,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:09,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:09,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:11:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:09,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:09,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:11:09,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756676514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:09,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444406266] [2024-11-28 04:11:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:09,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:09,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:09,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:09,845 INFO L87 Difference]: Start difference. First operand 168 states and 215 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:09,898 INFO L93 Difference]: Finished difference Result 304 states and 392 transitions. [2024-11-28 04:11:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:09,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-11-28 04:11:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:09,901 INFO L225 Difference]: With dead ends: 304 [2024-11-28 04:11:09,902 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 04:11:09,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:09,903 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 6 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 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 [2024-11-28 04:11:09,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 04:11:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2024-11-28 04:11:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 149 states have internal predecessors, (188), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2024-11-28 04:11:09,918 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 58 [2024-11-28 04:11:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:09,918 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2024-11-28 04:11:09,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2024-11-28 04:11:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:11:09,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:09,921 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:09,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:10,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 04:11:10,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:10,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash 409228803, now seen corresponding path program 1 times [2024-11-28 04:11:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165504157] [2024-11-28 04:11:10,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:11:10,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:10,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165504157] [2024-11-28 04:11:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165504157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136697097] [2024-11-28 04:11:10,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:10,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:10,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:10,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:10,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:11:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:10,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:10,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136697097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:10,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:10,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:10,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942344257] [2024-11-28 04:11:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:10,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:10,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:10,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:10,921 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:11,061 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-11-28 04:11:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:11,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-28 04:11:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:11,064 INFO L225 Difference]: With dead ends: 206 [2024-11-28 04:11:11,064 INFO L226 Difference]: Without dead ends: 200 [2024-11-28 04:11:11,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:11,068 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 48 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:11,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 373 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-28 04:11:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 170. [2024-11-28 04:11:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 148 states have (on average 1.277027027027027) internal successors, (189), 150 states have internal predecessors, (189), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 217 transitions. [2024-11-28 04:11:11,091 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 217 transitions. Word has length 61 [2024-11-28 04:11:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:11,092 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 217 transitions. [2024-11-28 04:11:11,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 217 transitions. [2024-11-28 04:11:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:11:11,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:11,094 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:11,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:11,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:11,299 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:11,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash -933743979, now seen corresponding path program 1 times [2024-11-28 04:11:11,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:11,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315204143] [2024-11-28 04:11:11,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:11,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:11,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315204143] [2024-11-28 04:11:11,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315204143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995046517] [2024-11-28 04:11:11,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:11,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:11,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:11,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:11,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:11:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:11,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:11,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:12,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995046517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:12,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:12,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:12,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312451715] [2024-11-28 04:11:12,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:12,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:12,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:12,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:12,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:12,003 INFO L87 Difference]: Start difference. First operand 170 states and 217 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:12,044 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2024-11-28 04:11:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:12,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2024-11-28 04:11:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:12,046 INFO L225 Difference]: With dead ends: 210 [2024-11-28 04:11:12,047 INFO L226 Difference]: Without dead ends: 173 [2024-11-28 04:11:12,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:12,048 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:12,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 617 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:12,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-28 04:11:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2024-11-28 04:11:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 150 states have (on average 1.2733333333333334) internal successors, (191), 152 states have internal predecessors, (191), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 219 transitions. [2024-11-28 04:11:12,072 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 219 transitions. Word has length 72 [2024-11-28 04:11:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:12,072 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 219 transitions. [2024-11-28 04:11:12,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 219 transitions. [2024-11-28 04:11:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:11:12,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:12,077 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:12,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:11:12,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:12,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:12,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:12,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1520549993, now seen corresponding path program 1 times [2024-11-28 04:11:12,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:12,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566158286] [2024-11-28 04:11:12,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:12,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:12,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566158286] [2024-11-28 04:11:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566158286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667097532] [2024-11-28 04:11:12,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:12,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:12,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:12,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:11:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:12,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:12,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:12,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:12,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667097532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:12,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:12,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:12,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942466218] [2024-11-28 04:11:12,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:12,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:12,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:12,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:12,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:12,966 INFO L87 Difference]: Start difference. First operand 172 states and 219 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:13,011 INFO L93 Difference]: Finished difference Result 214 states and 281 transitions. [2024-11-28 04:11:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2024-11-28 04:11:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:13,014 INFO L225 Difference]: With dead ends: 214 [2024-11-28 04:11:13,016 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 04:11:13,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:13,017 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:13,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 617 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 04:11:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2024-11-28 04:11:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 152 states have (on average 1.269736842105263) internal successors, (193), 154 states have internal predecessors, (193), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 221 transitions. [2024-11-28 04:11:13,040 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 221 transitions. Word has length 72 [2024-11-28 04:11:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:13,042 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 221 transitions. [2024-11-28 04:11:13,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 221 transitions. [2024-11-28 04:11:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:11:13,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:13,044 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:13,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:11:13,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:13,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:13,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash -819485415, now seen corresponding path program 1 times [2024-11-28 04:11:13,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:13,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772872424] [2024-11-28 04:11:13,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772872424] [2024-11-28 04:11:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772872424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447840727] [2024-11-28 04:11:13,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:13,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:13,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:13,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:13,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:11:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:13,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:13,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:13,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447840727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665161319] [2024-11-28 04:11:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:13,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:13,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:13,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:13,919 INFO L87 Difference]: Start difference. First operand 174 states and 221 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:13,962 INFO L93 Difference]: Finished difference Result 218 states and 286 transitions. [2024-11-28 04:11:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2024-11-28 04:11:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:13,965 INFO L225 Difference]: With dead ends: 218 [2024-11-28 04:11:13,965 INFO L226 Difference]: Without dead ends: 177 [2024-11-28 04:11:13,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:13,966 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:13,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 619 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-28 04:11:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-28 04:11:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 155 states have (on average 1.264516129032258) internal successors, (196), 157 states have internal predecessors, (196), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2024-11-28 04:11:13,986 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 72 [2024-11-28 04:11:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:13,986 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2024-11-28 04:11:13,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2024-11-28 04:11:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:11:13,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:13,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:14,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:14,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:14,189 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:14,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash 346119699, now seen corresponding path program 1 times [2024-11-28 04:11:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:14,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009832078] [2024-11-28 04:11:14,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:14,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:14,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:14,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009832078] [2024-11-28 04:11:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009832078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:14,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763972089] [2024-11-28 04:11:14,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:14,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:14,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:14,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:14,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:11:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:14,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:14,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:11:14,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763972089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102577333] [2024-11-28 04:11:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:14,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:14,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:14,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:14,898 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:14,927 INFO L93 Difference]: Finished difference Result 221 states and 287 transitions. [2024-11-28 04:11:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:14,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2024-11-28 04:11:14,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:14,931 INFO L225 Difference]: With dead ends: 221 [2024-11-28 04:11:14,933 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 04:11:14,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:14,934 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 37 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:14,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 418 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 04:11:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2024-11-28 04:11:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 192 states have (on average 1.3072916666666667) internal successors, (251), 194 states have internal predecessors, (251), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 279 transitions. [2024-11-28 04:11:14,955 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 279 transitions. Word has length 72 [2024-11-28 04:11:14,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:14,955 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 279 transitions. [2024-11-28 04:11:14,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 279 transitions. [2024-11-28 04:11:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:14,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:14,960 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:14,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:11:15,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:15,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:15,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash -575196997, now seen corresponding path program 1 times [2024-11-28 04:11:15,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:15,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357635547] [2024-11-28 04:11:15,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:15,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357635547] [2024-11-28 04:11:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357635547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645423796] [2024-11-28 04:11:15,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:15,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:15,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:15,411 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:15,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:11:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:15,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:15,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:15,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645423796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:15,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:15,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:15,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637427120] [2024-11-28 04:11:15,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:15,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:15,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:15,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:15,875 INFO L87 Difference]: Start difference. First operand 214 states and 279 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:15,915 INFO L93 Difference]: Finished difference Result 302 states and 406 transitions. [2024-11-28 04:11:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:15,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2024-11-28 04:11:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:15,918 INFO L225 Difference]: With dead ends: 302 [2024-11-28 04:11:15,919 INFO L226 Difference]: Without dead ends: 220 [2024-11-28 04:11:15,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:15,920 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:15,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 617 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-28 04:11:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2024-11-28 04:11:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 196 states have (on average 1.3010204081632653) internal successors, (255), 198 states have internal predecessors, (255), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2024-11-28 04:11:15,933 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 86 [2024-11-28 04:11:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:15,933 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2024-11-28 04:11:15,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2024-11-28 04:11:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:15,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:15,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:15,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:16,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:11:16,136 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:16,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2030826557, now seen corresponding path program 1 times [2024-11-28 04:11:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:16,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114567208] [2024-11-28 04:11:16,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:16,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114567208] [2024-11-28 04:11:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114567208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156002537] [2024-11-28 04:11:16,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:16,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:16,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:16,325 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:16,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:11:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:16,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:16,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:16,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156002537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974348427] [2024-11-28 04:11:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:16,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:16,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:16,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:16,733 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:16,770 INFO L93 Difference]: Finished difference Result 310 states and 416 transitions. [2024-11-28 04:11:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:16,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2024-11-28 04:11:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:16,773 INFO L225 Difference]: With dead ends: 310 [2024-11-28 04:11:16,773 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 04:11:16,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:16,774 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:16,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 619 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 04:11:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-11-28 04:11:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 202 states have (on average 1.2920792079207921) internal successors, (261), 204 states have internal predecessors, (261), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2024-11-28 04:11:16,786 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 86 [2024-11-28 04:11:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:16,787 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2024-11-28 04:11:16,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2024-11-28 04:11:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:16,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:16,808 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:16,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:11:17,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:11:17,008 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:17,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash 442478655, now seen corresponding path program 1 times [2024-11-28 04:11:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:17,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167769528] [2024-11-28 04:11:17,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:17,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:17,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:17,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167769528] [2024-11-28 04:11:17,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167769528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:17,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217204518] [2024-11-28 04:11:17,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:17,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:17,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:17,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:11:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:17,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:17,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:17,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217204518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:17,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193972299] [2024-11-28 04:11:17,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:17,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:17,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:17,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:17,637 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:17,704 INFO L93 Difference]: Finished difference Result 322 states and 426 transitions. [2024-11-28 04:11:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:17,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2024-11-28 04:11:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:17,707 INFO L225 Difference]: With dead ends: 322 [2024-11-28 04:11:17,707 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 04:11:17,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:17,708 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:17,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 617 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 04:11:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2024-11-28 04:11:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 206 states have (on average 1.2864077669902914) internal successors, (265), 208 states have internal predecessors, (265), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 293 transitions. [2024-11-28 04:11:17,718 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 293 transitions. Word has length 86 [2024-11-28 04:11:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:17,719 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 293 transitions. [2024-11-28 04:11:17,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 293 transitions. [2024-11-28 04:11:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:17,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:17,721 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:17,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:17,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:11:17,922 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:17,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1143543233, now seen corresponding path program 1 times [2024-11-28 04:11:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981031705] [2024-11-28 04:11:17,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981031705] [2024-11-28 04:11:18,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981031705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862412977] [2024-11-28 04:11:18,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:18,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:18,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:18,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:11:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:18,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:18,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:18,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:18,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862412977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:18,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:18,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499062853] [2024-11-28 04:11:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:18,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:18,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:18,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:18,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:18,616 INFO L87 Difference]: Start difference. First operand 228 states and 293 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:18,653 INFO L93 Difference]: Finished difference Result 330 states and 436 transitions. [2024-11-28 04:11:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2024-11-28 04:11:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:18,656 INFO L225 Difference]: With dead ends: 330 [2024-11-28 04:11:18,657 INFO L226 Difference]: Without dead ends: 234 [2024-11-28 04:11:18,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:18,659 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:18,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 619 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-28 04:11:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-11-28 04:11:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 212 states have (on average 1.278301886792453) internal successors, (271), 214 states have internal predecessors, (271), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2024-11-28 04:11:18,680 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 86 [2024-11-28 04:11:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:18,681 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2024-11-28 04:11:18,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2024-11-28 04:11:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:11:18,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:18,685 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:18,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:18,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:11:18,886 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:18,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1029284669, now seen corresponding path program 1 times [2024-11-28 04:11:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953449856] [2024-11-28 04:11:18,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:19,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:19,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953449856] [2024-11-28 04:11:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953449856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:19,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151990826] [2024-11-28 04:11:19,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:19,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:19,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:19,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:19,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:11:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:19,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:19,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:11:19,645 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151990826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:19,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:19,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966943841] [2024-11-28 04:11:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:19,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:19,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:19,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:19,648 INFO L87 Difference]: Start difference. First operand 234 states and 299 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:19,667 INFO L93 Difference]: Finished difference Result 336 states and 438 transitions. [2024-11-28 04:11:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:19,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2024-11-28 04:11:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:19,670 INFO L225 Difference]: With dead ends: 336 [2024-11-28 04:11:19,670 INFO L226 Difference]: Without dead ends: 330 [2024-11-28 04:11:19,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:19,671 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 23 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:19,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 418 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-28 04:11:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2024-11-28 04:11:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 308 states have (on average 1.3084415584415585) internal successors, (403), 310 states have internal predecessors, (403), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 431 transitions. [2024-11-28 04:11:19,698 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 431 transitions. Word has length 86 [2024-11-28 04:11:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:19,698 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 431 transitions. [2024-11-28 04:11:19,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 431 transitions. [2024-11-28 04:11:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:11:19,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:19,700 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:19,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:19,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:11:19,904 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:19,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash 893903761, now seen corresponding path program 1 times [2024-11-28 04:11:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:19,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752877407] [2024-11-28 04:11:19,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:11:20,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:20,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752877407] [2024-11-28 04:11:20,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752877407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:20,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394227860] [2024-11-28 04:11:20,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:20,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:20,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:20,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:20,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:11:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:20,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:20,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:11:20,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:20,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394227860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:20,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:20,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3589232] [2024-11-28 04:11:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:20,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:20,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:20,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:20,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:20,795 INFO L87 Difference]: Start difference. First operand 330 states and 431 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:20,823 INFO L93 Difference]: Finished difference Result 528 states and 702 transitions. [2024-11-28 04:11:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:20,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-28 04:11:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:20,827 INFO L225 Difference]: With dead ends: 528 [2024-11-28 04:11:20,829 INFO L226 Difference]: Without dead ends: 522 [2024-11-28 04:11:20,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:20,832 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 19 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:20,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 419 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-28 04:11:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-28 04:11:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 500 states have (on average 1.334) internal successors, (667), 502 states have internal predecessors, (667), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 695 transitions. [2024-11-28 04:11:20,860 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 695 transitions. Word has length 103 [2024-11-28 04:11:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:20,861 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 695 transitions. [2024-11-28 04:11:20,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 695 transitions. [2024-11-28 04:11:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:11:20,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:20,864 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:20,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:11:21,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:11:21,065 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:21,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 947743685, now seen corresponding path program 1 times [2024-11-28 04:11:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452367291] [2024-11-28 04:11:21,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 04:11:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452367291] [2024-11-28 04:11:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452367291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957799709] [2024-11-28 04:11:21,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:21,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:21,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:21,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:21,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:11:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:21,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:21,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 04:11:21,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:21,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957799709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:21,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:21,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:11:21,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462676754] [2024-11-28 04:11:21,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:21,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:21,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:21,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:21,959 INFO L87 Difference]: Start difference. First operand 522 states and 695 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:21,983 INFO L93 Difference]: Finished difference Result 912 states and 1230 transitions. [2024-11-28 04:11:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 114 [2024-11-28 04:11:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:21,988 INFO L225 Difference]: With dead ends: 912 [2024-11-28 04:11:21,988 INFO L226 Difference]: Without dead ends: 906 [2024-11-28 04:11:21,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:21,990 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 14 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:21,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 417 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-11-28 04:11:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2024-11-28 04:11:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 884 states have (on average 1.3518099547511313) internal successors, (1195), 886 states have internal predecessors, (1195), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1223 transitions. [2024-11-28 04:11:22,025 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1223 transitions. Word has length 114 [2024-11-28 04:11:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:22,028 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1223 transitions. [2024-11-28 04:11:22,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1223 transitions. [2024-11-28 04:11:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 04:11:22,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:22,032 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:22,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:22,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:11:22,233 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:22,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -588837709, now seen corresponding path program 1 times [2024-11-28 04:11:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245362276] [2024-11-28 04:11:22,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:11:22,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245362276] [2024-11-28 04:11:22,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245362276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644777018] [2024-11-28 04:11:22,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:22,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:22,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:22,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:22,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:11:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:23,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:23,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:11:23,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644777018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:23,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:11:23,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387800084] [2024-11-28 04:11:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:23,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:23,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:23,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:23,089 INFO L87 Difference]: Start difference. First operand 906 states and 1223 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:23,134 INFO L93 Difference]: Finished difference Result 1728 states and 2366 transitions. [2024-11-28 04:11:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 145 [2024-11-28 04:11:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:23,141 INFO L225 Difference]: With dead ends: 1728 [2024-11-28 04:11:23,141 INFO L226 Difference]: Without dead ends: 954 [2024-11-28 04:11:23,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:23,143 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:23,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 619 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-28 04:11:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2024-11-28 04:11:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 932 states have (on average 1.3336909871244635) internal successors, (1243), 934 states have internal predecessors, (1243), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1271 transitions. [2024-11-28 04:11:23,181 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1271 transitions. Word has length 145 [2024-11-28 04:11:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:23,182 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1271 transitions. [2024-11-28 04:11:23,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:11:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1271 transitions. [2024-11-28 04:11:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 04:11:23,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:23,186 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:23,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:23,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:11:23,387 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:23,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -534444811, now seen corresponding path program 1 times [2024-11-28 04:11:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:23,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574188801] [2024-11-28 04:11:23,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:11:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574188801] [2024-11-28 04:11:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574188801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661273616] [2024-11-28 04:11:23,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:23,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:23,609 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:23,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:11:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:24,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:24,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:11:24,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:11:24,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661273616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:24,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:24,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:11:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5145869] [2024-11-28 04:11:24,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:24,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:11:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:24,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:11:24,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:24,384 INFO L87 Difference]: Start difference. First operand 954 states and 1271 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:11:24,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:24,466 INFO L93 Difference]: Finished difference Result 1909 states and 2545 transitions. [2024-11-28 04:11:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:11:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 145 [2024-11-28 04:11:24,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:24,474 INFO L225 Difference]: With dead ends: 1909 [2024-11-28 04:11:24,475 INFO L226 Difference]: Without dead ends: 960 [2024-11-28 04:11:24,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:24,482 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 2 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:24,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-28 04:11:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2024-11-28 04:11:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 938 states have (on average 1.3315565031982943) internal successors, (1249), 940 states have internal predecessors, (1249), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:24,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1277 transitions. [2024-11-28 04:11:24,531 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1277 transitions. Word has length 145 [2024-11-28 04:11:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:24,532 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1277 transitions. [2024-11-28 04:11:24,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:11:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1277 transitions. [2024-11-28 04:11:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 04:11:24,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:24,538 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:24,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:24,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:11:24,742 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:24,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1839001207, now seen corresponding path program 2 times [2024-11-28 04:11:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:24,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027568966] [2024-11-28 04:11:24,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:24,961 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:24,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-28 04:11:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027568966] [2024-11-28 04:11:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027568966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928510961] [2024-11-28 04:11:25,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:25,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:25,112 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:25,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:11:26,527 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:26,527 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:26,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:11:26,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:11:26,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:11:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928510961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:26,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:26,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-28 04:11:26,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572604649] [2024-11-28 04:11:26,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:26,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:11:26,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:26,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:11:26,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:26,725 INFO L87 Difference]: Start difference. First operand 960 states and 1277 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:11:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:26,834 INFO L93 Difference]: Finished difference Result 1921 states and 2562 transitions. [2024-11-28 04:11:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:11:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 151 [2024-11-28 04:11:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:26,839 INFO L225 Difference]: With dead ends: 1921 [2024-11-28 04:11:26,840 INFO L226 Difference]: Without dead ends: 972 [2024-11-28 04:11:26,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:26,842 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 2 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:26,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 617 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2024-11-28 04:11:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2024-11-28 04:11:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 950 states have (on average 1.3273684210526315) internal successors, (1261), 952 states have internal predecessors, (1261), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:11:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1289 transitions. [2024-11-28 04:11:26,876 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1289 transitions. Word has length 151 [2024-11-28 04:11:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:26,877 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1289 transitions. [2024-11-28 04:11:26,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:11:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1289 transitions. [2024-11-28 04:11:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 04:11:26,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:26,881 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:26,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:11:27,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:27,086 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:27,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1870411875, now seen corresponding path program 3 times [2024-11-28 04:11:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:27,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764397874] [2024-11-28 04:11:27,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:27,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:11:27,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-28 04:11:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764397874] [2024-11-28 04:11:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764397874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:27,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:27,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:11:27,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106086970] [2024-11-28 04:11:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:27,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:11:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:27,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:11:27,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:27,873 INFO L87 Difference]: Start difference. First operand 972 states and 1289 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:30,022 INFO L93 Difference]: Finished difference Result 1875 states and 2505 transitions. [2024-11-28 04:11:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:11:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 165 [2024-11-28 04:11:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:30,030 INFO L225 Difference]: With dead ends: 1875 [2024-11-28 04:11:30,031 INFO L226 Difference]: Without dead ends: 1046 [2024-11-28 04:11:30,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:11:30,036 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 185 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:30,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 980 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:11:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2024-11-28 04:11:30,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1014. [2024-11-28 04:11:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 986 states have (on average 1.3235294117647058) internal successors, (1305), 990 states have internal predecessors, (1305), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 04:11:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1345 transitions. [2024-11-28 04:11:30,080 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1345 transitions. Word has length 165 [2024-11-28 04:11:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:30,080 INFO L471 AbstractCegarLoop]: Abstraction has 1014 states and 1345 transitions. [2024-11-28 04:11:30,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:11:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1345 transitions. [2024-11-28 04:11:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 04:11:30,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:30,085 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:30,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:11:30,085 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:30,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1510909233, now seen corresponding path program 1 times [2024-11-28 04:11:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:30,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910435165] [2024-11-28 04:11:30,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:30,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-28 04:11:30,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910435165] [2024-11-28 04:11:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910435165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929565729] [2024-11-28 04:11:30,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:30,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:30,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:30,461 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:30,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:11:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:31,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:11:31,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-28 04:11:31,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-28 04:11:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929565729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:31,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:31,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:11:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336593891] [2024-11-28 04:11:31,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:31,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:11:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:31,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:11:31,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:31,333 INFO L87 Difference]: Start difference. First operand 1014 states and 1345 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:31,508 INFO L93 Difference]: Finished difference Result 2004 states and 2668 transitions. [2024-11-28 04:11:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:11:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 184 [2024-11-28 04:11:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:31,517 INFO L225 Difference]: With dead ends: 2004 [2024-11-28 04:11:31,517 INFO L226 Difference]: Without dead ends: 1035 [2024-11-28 04:11:31,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:31,521 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 26 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:31,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 425 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-28 04:11:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2024-11-28 04:11:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1004 states have (on average 1.3207171314741035) internal successors, (1326), 1008 states have internal predecessors, (1326), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-28 04:11:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1372 transitions. [2024-11-28 04:11:31,563 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1372 transitions. Word has length 184 [2024-11-28 04:11:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:31,564 INFO L471 AbstractCegarLoop]: Abstraction has 1035 states and 1372 transitions. [2024-11-28 04:11:31,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1372 transitions. [2024-11-28 04:11:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-28 04:11:31,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:31,569 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:31,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:11:31,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:31,773 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:31,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2064230185, now seen corresponding path program 2 times [2024-11-28 04:11:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170601580] [2024-11-28 04:11:31,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:31,969 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:31,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-28 04:11:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:32,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170601580] [2024-11-28 04:11:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170601580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:32,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837083403] [2024-11-28 04:11:32,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:32,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:32,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:32,219 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:32,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:11:33,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:11:33,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:33,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:11:33,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-28 04:11:33,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-28 04:11:33,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837083403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:33,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:33,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-28 04:11:33,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24346048] [2024-11-28 04:11:33,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:33,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:11:33,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:33,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:11:33,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:33,864 INFO L87 Difference]: Start difference. First operand 1035 states and 1372 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:34,211 INFO L93 Difference]: Finished difference Result 2052 states and 2733 transitions. [2024-11-28 04:11:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:11:34,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 193 [2024-11-28 04:11:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:34,218 INFO L225 Difference]: With dead ends: 2052 [2024-11-28 04:11:34,218 INFO L226 Difference]: Without dead ends: 1083 [2024-11-28 04:11:34,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:34,221 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 86 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:34,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 819 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-11-28 04:11:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1077. [2024-11-28 04:11:34,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1040 states have (on average 1.3153846153846154) internal successors, (1368), 1044 states have internal predecessors, (1368), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-28 04:11:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1426 transitions. [2024-11-28 04:11:34,261 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1426 transitions. Word has length 193 [2024-11-28 04:11:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:34,262 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1426 transitions. [2024-11-28 04:11:34,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 13 states have internal predecessors, (142), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1426 transitions. [2024-11-28 04:11:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-28 04:11:34,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:34,267 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:34,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:34,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:34,468 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:34,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1248006820, now seen corresponding path program 3 times [2024-11-28 04:11:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553726896] [2024-11-28 04:11:34,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:34,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:34,660 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:11:34,663 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-28 04:11:35,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:35,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553726896] [2024-11-28 04:11:35,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553726896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:35,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938445007] [2024-11-28 04:11:35,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:11:35,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:35,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:35,920 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:35,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0881210-81a4-47f0-96d7-d22ac8514077/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:11:37,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:11:37,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:37,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:11:37,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:37,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 179 [2024-11-28 04:11:41,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:41,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 190 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 156 treesize of output 194 [2024-11-28 04:11:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-28 04:11:42,392 INFO L312 TraceCheckSpWp]: Computing backward predicates...