./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme --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 bcbcb400fb3c2001bae06c1a3f5fabc11943b7dd9f57ad2b480b7bdc063ccccb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:52:29,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:52:29,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:52:29,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:52:29,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:52:29,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:52:29,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:52:29,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:52:29,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:52:29,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:52:29,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:52:29,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:52:29,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:52:29,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:52:29,755 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:52:29,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:52:29,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:52:29,757 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:52:29,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:52:29,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:52:29,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:52:29,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:52:29,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:52:29,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:52:29,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:52:29,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:52:29,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:52:29,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:52:29,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:52:29,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:52:29,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:52:29,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:29,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:52:29,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:52:29,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:52:29,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:52:29,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:52:29,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:52:29,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:52:29,771 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:52:29,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:52:29,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:52:29,772 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbcb400fb3c2001bae06c1a3f5fabc11943b7dd9f57ad2b480b7bdc063ccccb [2023-11-26 11:52:30,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:30,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:30,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:30,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:30,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:30,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i [2023-11-26 11:52:33,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:33,613 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:33,614 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i [2023-11-26 11:52:33,626 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/data/76be81cad/bcd2fe9777654efc8945640dd40db586/FLAG3c389cff8 [2023-11-26 11:52:33,641 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/data/76be81cad/bcd2fe9777654efc8945640dd40db586 [2023-11-26 11:52:33,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:33,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:33,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:33,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:33,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:33,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:33" (1/1) ... [2023-11-26 11:52:33,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f469708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:33, skipping insertion in model container [2023-11-26 11:52:33,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:33" (1/1) ... [2023-11-26 11:52:33,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:33,905 WARN L240 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_2ab2f2f5-074a-4423-a8a0-8981b6649d15/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i[916,929] [2023-11-26 11:52:34,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:34,045 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:34,057 WARN L240 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_2ab2f2f5-074a-4423-a8a0-8981b6649d15/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-42.i[916,929] [2023-11-26 11:52:34,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:34,136 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:34,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34 WrapperNode [2023-11-26 11:52:34,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:34,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:34,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:34,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:34,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,259 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 335 [2023-11-26 11:52:34,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:34,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:34,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:34,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:34,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,305 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:52:34,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:34,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:34,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:34,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:34,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (1/1) ... [2023-11-26 11:52:34,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:34,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:34,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:52:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:52:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:34,613 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:34,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:35,282 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:35,345 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:35,345 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:52:35,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:35 BoogieIcfgContainer [2023-11-26 11:52:35,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:35,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:35,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:35,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:35,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:33" (1/3) ... [2023-11-26 11:52:35,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7072c8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:35, skipping insertion in model container [2023-11-26 11:52:35,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:34" (2/3) ... [2023-11-26 11:52:35,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7072c8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:35, skipping insertion in model container [2023-11-26 11:52:35,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:35" (3/3) ... [2023-11-26 11:52:35,354 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-42.i [2023-11-26 11:52:35,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:35,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:52:35,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:35,438 INFO L357 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, mHoare=true, 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;@249a34c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:35,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:52:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 80 states have (on average 1.4875) internal successors, (119), 81 states have internal predecessors, (119), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-26 11:52:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-26 11:52:35,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:35,471 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:35,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:35,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1030235626, now seen corresponding path program 1 times [2023-11-26 11:52:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983062588] [2023-11-26 11:52:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:35,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983062588] [2023-11-26 11:52:36,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:52:36,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646052792] [2023-11-26 11:52:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:36,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:36,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:36,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:36,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:52:36,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-11-26 11:52:36,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646052792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:36,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:36,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:36,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6237205] [2023-11-26 11:52:36,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:52:36,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:52:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:52:36,497 INFO L87 Difference]: Start difference. First operand has 140 states, 80 states have (on average 1.4875) internal successors, (119), 81 states have internal predecessors, (119), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-26 11:52:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:36,602 INFO L93 Difference]: Finished difference Result 277 states and 521 transitions. [2023-11-26 11:52:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:52:36,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 349 [2023-11-26 11:52:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:36,617 INFO L225 Difference]: With dead ends: 277 [2023-11-26 11:52:36,618 INFO L226 Difference]: Without dead ends: 138 [2023-11-26 11:52:36,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:52:36,632 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:36,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-26 11:52:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-26 11:52:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 79 states have internal predecessors, (114), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-26 11:52:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 228 transitions. [2023-11-26 11:52:36,714 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 228 transitions. Word has length 349 [2023-11-26 11:52:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:36,714 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 228 transitions. [2023-11-26 11:52:36,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-26 11:52:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 228 transitions. [2023-11-26 11:52:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-26 11:52:36,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:36,735 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:36,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:36,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:52:36,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:36,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash -752416684, now seen corresponding path program 1 times [2023-11-26 11:52:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:36,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511031800] [2023-11-26 11:52:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:36,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:37,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649671538] [2023-11-26 11:52:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:37,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:37,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:37,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:37,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:37,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-11-26 11:52:37,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:37,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:37,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511031800] [2023-11-26 11:52:37,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:37,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649671538] [2023-11-26 11:52:37,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649671538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:37,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:37,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:37,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769697996] [2023-11-26 11:52:37,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:37,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:37,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:37,508 INFO L87 Difference]: Start difference. First operand 138 states and 228 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-26 11:52:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:37,597 INFO L93 Difference]: Finished difference Result 275 states and 455 transitions. [2023-11-26 11:52:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 349 [2023-11-26 11:52:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:37,610 INFO L225 Difference]: With dead ends: 275 [2023-11-26 11:52:37,611 INFO L226 Difference]: Without dead ends: 138 [2023-11-26 11:52:37,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:37,616 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 11 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:37,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 427 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-26 11:52:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-26 11:52:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 79 states have internal predecessors, (113), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-26 11:52:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 227 transitions. [2023-11-26 11:52:37,660 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 227 transitions. Word has length 349 [2023-11-26 11:52:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:37,663 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 227 transitions. [2023-11-26 11:52:37,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-26 11:52:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 227 transitions. [2023-11-26 11:52:37,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-26 11:52:37,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:37,671 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:37,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:37,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:37,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:37,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1561763310, now seen corresponding path program 1 times [2023-11-26 11:52:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:37,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885845525] [2023-11-26 11:52:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:37,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:37,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793630361] [2023-11-26 11:52:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:37,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:37,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:37,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:38,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-11-26 11:52:39,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:39,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:39,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885845525] [2023-11-26 11:52:39,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:39,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793630361] [2023-11-26 11:52:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793630361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:52:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304852815] [2023-11-26 11:52:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:39,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:39,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:39,064 INFO L87 Difference]: Start difference. First operand 138 states and 227 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-26 11:52:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:39,633 INFO L93 Difference]: Finished difference Result 497 states and 822 transitions. [2023-11-26 11:52:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:39,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 349 [2023-11-26 11:52:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:39,640 INFO L225 Difference]: With dead ends: 497 [2023-11-26 11:52:39,640 INFO L226 Difference]: Without dead ends: 360 [2023-11-26 11:52:39,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:39,644 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 456 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:39,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 909 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:52:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-26 11:52:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 270. [2023-11-26 11:52:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 153 states have (on average 1.4509803921568627) internal successors, (222), 153 states have internal predecessors, (222), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-26 11:52:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 450 transitions. [2023-11-26 11:52:39,732 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 450 transitions. Word has length 349 [2023-11-26 11:52:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:39,733 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 450 transitions. [2023-11-26 11:52:39,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-26 11:52:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 450 transitions. [2023-11-26 11:52:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-11-26 11:52:39,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:39,740 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:39,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:39,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:39,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:39,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1839595402, now seen corresponding path program 1 times [2023-11-26 11:52:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864397897] [2023-11-26 11:52:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:40,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929630718] [2023-11-26 11:52:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:40,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:40,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:40,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:52:40,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2786 proven. 51 refuted. 0 times theorem prover too weak. 3547 trivial. 0 not checked. [2023-11-26 11:52:40,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-11-26 11:52:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864397897] [2023-11-26 11:52:40,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929630718] [2023-11-26 11:52:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929630718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:40,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:40,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:52:40,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344466501] [2023-11-26 11:52:40,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:40,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:40,766 INFO L87 Difference]: Start difference. First operand 270 states and 450 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2023-11-26 11:52:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:41,245 INFO L93 Difference]: Finished difference Result 446 states and 735 transitions. [2023-11-26 11:52:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:41,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 350 [2023-11-26 11:52:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:41,251 INFO L225 Difference]: With dead ends: 446 [2023-11-26 11:52:41,251 INFO L226 Difference]: Without dead ends: 282 [2023-11-26 11:52:41,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:41,253 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 228 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:41,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 367 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:52:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-26 11:52:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2023-11-26 11:52:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 159 states have (on average 1.4150943396226414) internal successors, (225), 159 states have internal predecessors, (225), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-26 11:52:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 453 transitions. [2023-11-26 11:52:41,319 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 453 transitions. Word has length 350 [2023-11-26 11:52:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:41,321 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 453 transitions. [2023-11-26 11:52:41,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2023-11-26 11:52:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 453 transitions. [2023-11-26 11:52:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-11-26 11:52:41,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:41,326 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:41,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:41,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:41,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:41,537 INFO L85 PathProgramCache]: Analyzing trace with hash 532143860, now seen corresponding path program 1 times [2023-11-26 11:52:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691351388] [2023-11-26 11:52:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:41,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379871059] [2023-11-26 11:52:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:41,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:41,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:52:41,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2039 proven. 279 refuted. 0 times theorem prover too weak. 4066 trivial. 0 not checked. [2023-11-26 11:52:43,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 51 proven. 282 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-11-26 11:52:44,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:44,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691351388] [2023-11-26 11:52:44,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379871059] [2023-11-26 11:52:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379871059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:44,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:44,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-26 11:52:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631062763] [2023-11-26 11:52:44,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:52:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:52:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:44,152 INFO L87 Difference]: Start difference. First operand 278 states and 453 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 3 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (107), 3 states have call predecessors, (107), 3 states have call successors, (107) [2023-11-26 11:52:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:46,287 INFO L93 Difference]: Finished difference Result 756 states and 1183 transitions. [2023-11-26 11:52:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-26 11:52:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 3 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (107), 3 states have call predecessors, (107), 3 states have call successors, (107) Word has length 350 [2023-11-26 11:52:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:46,293 INFO L225 Difference]: With dead ends: 756 [2023-11-26 11:52:46,293 INFO L226 Difference]: Without dead ends: 615 [2023-11-26 11:52:46,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 688 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=578, Invalid=1584, Unknown=0, NotChecked=0, Total=2162 [2023-11-26 11:52:46,296 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 458 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:46,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1483 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:52:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-26 11:52:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 440. [2023-11-26 11:52:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 256 states have (on average 1.37890625) internal successors, (353), 256 states have internal predecessors, (353), 171 states have call successors, (171), 12 states have call predecessors, (171), 12 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2023-11-26 11:52:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 695 transitions. [2023-11-26 11:52:46,437 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 695 transitions. Word has length 350 [2023-11-26 11:52:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:46,438 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 695 transitions. [2023-11-26 11:52:46,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 3 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (107), 3 states have call predecessors, (107), 3 states have call successors, (107) [2023-11-26 11:52:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 695 transitions. [2023-11-26 11:52:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-11-26 11:52:46,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:46,445 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:46,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:46,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:46,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:46,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash -54662154, now seen corresponding path program 1 times [2023-11-26 11:52:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:46,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390205834] [2023-11-26 11:52:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:46,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:46,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992654941] [2023-11-26 11:52:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:46,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:46,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:46,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:46,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:52:46,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-11-26 11:52:48,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390205834] [2023-11-26 11:52:48,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992654941] [2023-11-26 11:52:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992654941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382309917] [2023-11-26 11:52:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:48,176 INFO L87 Difference]: Start difference. First operand 440 states and 695 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-26 11:52:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:48,623 INFO L93 Difference]: Finished difference Result 925 states and 1450 transitions. [2023-11-26 11:52:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:48,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 350 [2023-11-26 11:52:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:48,630 INFO L225 Difference]: With dead ends: 925 [2023-11-26 11:52:48,630 INFO L226 Difference]: Without dead ends: 630 [2023-11-26 11:52:48,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:48,633 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 189 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:48,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 777 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-26 11:52:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 597. [2023-11-26 11:52:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 352 states have (on average 1.3778409090909092) internal successors, (485), 352 states have internal predecessors, (485), 228 states have call successors, (228), 16 states have call predecessors, (228), 16 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-26 11:52:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 941 transitions. [2023-11-26 11:52:48,797 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 941 transitions. Word has length 350 [2023-11-26 11:52:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:48,799 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 941 transitions. [2023-11-26 11:52:48,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-26 11:52:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 941 transitions. [2023-11-26 11:52:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-11-26 11:52:48,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:48,803 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:48,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:49,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:52:49,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:49,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1065779404, now seen corresponding path program 1 times [2023-11-26 11:52:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:49,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455337575] [2023-11-26 11:52:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:49,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:49,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049914865] [2023-11-26 11:52:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:49,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:49,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:49,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:52:49,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3320 proven. 168 refuted. 0 times theorem prover too weak. 2896 trivial. 0 not checked. [2023-11-26 11:52:50,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 318 proven. 177 refuted. 0 times theorem prover too weak. 5889 trivial. 0 not checked. [2023-11-26 11:52:51,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:51,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455337575] [2023-11-26 11:52:51,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049914865] [2023-11-26 11:52:51,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049914865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:51,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:51,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-26 11:52:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497919595] [2023-11-26 11:52:51,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:52:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:52:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:52:51,806 INFO L87 Difference]: Start difference. First operand 597 states and 941 transitions. Second operand has 22 states, 21 states have (on average 5.666666666666667) internal successors, (119), 20 states have internal predecessors, (119), 7 states have call successors, (79), 4 states have call predecessors, (79), 9 states have return successors, (80), 7 states have call predecessors, (80), 7 states have call successors, (80) [2023-11-26 11:52:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:56,320 INFO L93 Difference]: Finished difference Result 1692 states and 2559 transitions. [2023-11-26 11:52:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-26 11:52:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.666666666666667) internal successors, (119), 20 states have internal predecessors, (119), 7 states have call successors, (79), 4 states have call predecessors, (79), 9 states have return successors, (80), 7 states have call predecessors, (80), 7 states have call successors, (80) Word has length 350 [2023-11-26 11:52:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:56,335 INFO L225 Difference]: With dead ends: 1692 [2023-11-26 11:52:56,336 INFO L226 Difference]: Without dead ends: 1234 [2023-11-26 11:52:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=825, Invalid=2255, Unknown=0, NotChecked=0, Total=3080 [2023-11-26 11:52:56,340 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 849 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:56,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 648 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-26 11:52:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-11-26 11:52:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1162. [2023-11-26 11:52:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 713 states have (on average 1.343618513323983) internal successors, (958), 713 states have internal predecessors, (958), 399 states have call successors, (399), 49 states have call predecessors, (399), 49 states have return successors, (399), 399 states have call predecessors, (399), 399 states have call successors, (399) [2023-11-26 11:52:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1756 transitions. [2023-11-26 11:52:56,611 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1756 transitions. Word has length 350 [2023-11-26 11:52:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:56,625 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1756 transitions. [2023-11-26 11:52:56,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.666666666666667) internal successors, (119), 20 states have internal predecessors, (119), 7 states have call successors, (79), 4 states have call predecessors, (79), 9 states have return successors, (80), 7 states have call predecessors, (80), 7 states have call successors, (80) [2023-11-26 11:52:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1756 transitions. [2023-11-26 11:52:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-26 11:52:56,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:56,644 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:56,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:56,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:56,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash 539250609, now seen corresponding path program 1 times [2023-11-26 11:52:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:56,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815446833] [2023-11-26 11:52:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:56,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:56,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:56,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457873521] [2023-11-26 11:52:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:56,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:56,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:56,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:58,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-26 11:52:58,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3644 proven. 231 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2023-11-26 11:53:00,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815446833] [2023-11-26 11:53:05,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457873521] [2023-11-26 11:53:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457873521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:05,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-26 11:53:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381942458] [2023-11-26 11:53:05,221 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:53:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:05,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:53:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2023-11-26 11:53:05,224 INFO L87 Difference]: Start difference. First operand 1162 states and 1756 transitions. Second operand has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 21 states have internal predecessors, (96), 7 states have call successors, (57), 7 states have call predecessors, (57), 10 states have return successors, (57), 7 states have call predecessors, (57), 7 states have call successors, (57) [2023-11-26 11:53:11,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:11,081 INFO L93 Difference]: Finished difference Result 2815 states and 4068 transitions. [2023-11-26 11:53:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-26 11:53:11,082 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 21 states have internal predecessors, (96), 7 states have call successors, (57), 7 states have call predecessors, (57), 10 states have return successors, (57), 7 states have call predecessors, (57), 7 states have call successors, (57) Word has length 351 [2023-11-26 11:53:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:11,100 INFO L225 Difference]: With dead ends: 2815 [2023-11-26 11:53:11,100 INFO L226 Difference]: Without dead ends: 2317 [2023-11-26 11:53:11,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1326, Invalid=4994, Unknown=0, NotChecked=0, Total=6320 [2023-11-26 11:53:11,106 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 635 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:11,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2124 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [320 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-26 11:53:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-11-26 11:53:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2180. [2023-11-26 11:53:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 1359 states have (on average 1.3053715967623252) internal successors, (1774), 1362 states have internal predecessors, (1774), 699 states have call successors, (699), 121 states have call predecessors, (699), 121 states have return successors, (699), 696 states have call predecessors, (699), 699 states have call successors, (699) [2023-11-26 11:53:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3172 transitions. [2023-11-26 11:53:11,677 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3172 transitions. Word has length 351 [2023-11-26 11:53:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:11,678 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3172 transitions. [2023-11-26 11:53:11,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 21 states have internal predecessors, (96), 7 states have call successors, (57), 7 states have call predecessors, (57), 10 states have return successors, (57), 7 states have call predecessors, (57), 7 states have call successors, (57) [2023-11-26 11:53:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3172 transitions. [2023-11-26 11:53:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-26 11:53:11,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:11,683 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:11,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:11,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:11,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 601290223, now seen corresponding path program 1 times [2023-11-26 11:53:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:11,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967024494] [2023-11-26 11:53:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:11,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:11,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:11,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414396456] [2023-11-26 11:53:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:11,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:11,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:53:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:12,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:53:12,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2976 proven. 126 refuted. 0 times theorem prover too weak. 3282 trivial. 0 not checked. [2023-11-26 11:53:13,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:13,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967024494] [2023-11-26 11:53:13,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:13,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414396456] [2023-11-26 11:53:13,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414396456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:13,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:13,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-26 11:53:13,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242410299] [2023-11-26 11:53:13,735 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:13,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:53:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:13,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:53:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:53:13,738 INFO L87 Difference]: Start difference. First operand 2180 states and 3172 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (57), 4 states have call predecessors, (57), 6 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2023-11-26 11:53:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:17,897 INFO L93 Difference]: Finished difference Result 8397 states and 11825 transitions. [2023-11-26 11:53:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-26 11:53:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (57), 4 states have call predecessors, (57), 6 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 351 [2023-11-26 11:53:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:17,948 INFO L225 Difference]: With dead ends: 8397 [2023-11-26 11:53:17,948 INFO L226 Difference]: Without dead ends: 6435 [2023-11-26 11:53:17,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=621, Invalid=2241, Unknown=0, NotChecked=0, Total=2862 [2023-11-26 11:53:17,959 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 876 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:17,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1209 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 11:53:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6435 states. [2023-11-26 11:53:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6435 to 5444. [2023-11-26 11:53:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 3407 states have (on average 1.2779571470501907) internal successors, (4354), 3431 states have internal predecessors, (4354), 1698 states have call successors, (1698), 338 states have call predecessors, (1698), 338 states have return successors, (1698), 1674 states have call predecessors, (1698), 1698 states have call successors, (1698) [2023-11-26 11:53:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7750 transitions. [2023-11-26 11:53:19,302 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7750 transitions. Word has length 351 [2023-11-26 11:53:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:19,303 INFO L495 AbstractCegarLoop]: Abstraction has 5444 states and 7750 transitions. [2023-11-26 11:53:19,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (57), 4 states have call predecessors, (57), 6 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2023-11-26 11:53:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7750 transitions. [2023-11-26 11:53:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-26 11:53:19,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:19,308 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:19,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:19,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:19,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:19,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash -109613391, now seen corresponding path program 1 times [2023-11-26 11:53:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076696395] [2023-11-26 11:53:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:19,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:19,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099848595] [2023-11-26 11:53:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:19,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:19,565 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:19,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab2f2f5-074a-4423-a8a0-8981b6649d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:53:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:19,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:53:19,871 INFO L285 TraceCheckSpWp]: Computing forward predicates...