./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-20.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_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/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_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/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_22b9e041-868c-4951-865f-a7ca93ecac2e/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 11908f139bc91afe62deb6d1042c8451bedb2236172502f2a6c9d38ec6652a36 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:14,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:15,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:43:15,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:15,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:15,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:15,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:15,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:15,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:15,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:15,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:15,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:15,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:15,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:15,052 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:15,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:15,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:15,054 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:15,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:15,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:15,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:15,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:15,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:15,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:15,061 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:15,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:15,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:15,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:15,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:15,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:15,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:15,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:15,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:15,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:15,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:15,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:15,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:15,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:15,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:15,068 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:15,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:15,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:15,070 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_22b9e041-868c-4951-865f-a7ca93ecac2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11908f139bc91afe62deb6d1042c8451bedb2236172502f2a6c9d38ec6652a36 [2023-11-26 10:43:15,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:15,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:15,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:15,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:15,454 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:15,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-20.i [2023-11-26 10:43:18,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:18,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:18,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-20.i [2023-11-26 10:43:18,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/data/3643f476d/86b1325ddb8844019f27a5df97e0a911/FLAG31f856f09 [2023-11-26 10:43:18,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/data/3643f476d/86b1325ddb8844019f27a5df97e0a911 [2023-11-26 10:43:19,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:19,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:19,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:19,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:19,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:19,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73680a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19, skipping insertion in model container [2023-11-26 10:43:19,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:19,260 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_22b9e041-868c-4951-865f-a7ca93ecac2e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-20.i[919,932] [2023-11-26 10:43:19,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:19,362 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:19,376 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_22b9e041-868c-4951-865f-a7ca93ecac2e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-20.i[919,932] [2023-11-26 10:43:19,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:19,453 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:19,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19 WrapperNode [2023-11-26 10:43:19,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:19,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:19,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:19,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:19,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,548 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2023-11-26 10:43:19,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:19,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:19,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:19,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:19,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,589 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 10:43:19,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:19,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:19,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:19,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:19,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:19,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:19,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:19,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:43:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:43:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:19,868 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:19,871 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:20,518 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:20,565 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:20,565 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:43:20,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:20 BoogieIcfgContainer [2023-11-26 10:43:20,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:20,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:20,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:20,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:20,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:19" (1/3) ... [2023-11-26 10:43:20,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3dde58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:20, skipping insertion in model container [2023-11-26 10:43:20,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19" (2/3) ... [2023-11-26 10:43:20,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3dde58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:20, skipping insertion in model container [2023-11-26 10:43:20,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:20" (3/3) ... [2023-11-26 10:43:20,581 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-20.i [2023-11-26 10:43:20,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:20,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:43:20,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:20,670 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;@50eae1b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:20,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:43:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 56 states have (on average 1.5) internal successors, (84), 57 states have internal predecessors, (84), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:43:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-26 10:43:20,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:20,700 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:20,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:20,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2052902968, now seen corresponding path program 1 times [2023-11-26 10:43:20,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:20,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585311236] [2023-11-26 10:43:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:20,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585311236] [2023-11-26 10:43:21,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:43:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657707679] [2023-11-26 10:43:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:21,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:21,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:21,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:43:21,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-11-26 10:43:21,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657707679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:21,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923860558] [2023-11-26 10:43:21,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:43:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:21,377 INFO L87 Difference]: Start difference. First operand has 90 states, 56 states have (on average 1.5) internal successors, (84), 57 states have internal predecessors, (84), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-26 10:43:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:21,456 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2023-11-26 10:43:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2023-11-26 10:43:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:21,473 INFO L225 Difference]: With dead ends: 177 [2023-11-26 10:43:21,473 INFO L226 Difference]: Without dead ends: 88 [2023-11-26 10:43:21,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 10:43:21,488 INFO L413 NwaCegarLoop]: 137 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, 137 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 10:43:21,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-26 10:43:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-26 10:43:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:43:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 140 transitions. [2023-11-26 10:43:21,565 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 140 transitions. Word has length 193 [2023-11-26 10:43:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:21,565 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 140 transitions. [2023-11-26 10:43:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-26 10:43:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 140 transitions. [2023-11-26 10:43:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-26 10:43:21,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:21,578 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:21,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:21,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:43:21,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:21,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:21,786 INFO L85 PathProgramCache]: Analyzing trace with hash -843516588, now seen corresponding path program 1 times [2023-11-26 10:43:21,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912258403] [2023-11-26 10:43:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:21,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198851818] [2023-11-26 10:43:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:21,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:22,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:22,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-26 10:43:22,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 906 proven. 324 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-11-26 10:43:25,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 69 proven. 273 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-11-26 10:43:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912258403] [2023-11-26 10:43:29,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198851818] [2023-11-26 10:43:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198851818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:29,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:29,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 42 [2023-11-26 10:43:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395749367] [2023-11-26 10:43:29,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:29,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-26 10:43:29,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:29,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-26 10:43:29,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 10:43:29,786 INFO L87 Difference]: Start difference. First operand 88 states and 140 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 42 states have internal predecessors, (115), 11 states have call successors, (59), 7 states have call predecessors, (59), 15 states have return successors, (60), 11 states have call predecessors, (60), 11 states have call successors, (60) [2023-11-26 10:43:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:39,874 INFO L93 Difference]: Finished difference Result 511 states and 743 transitions. [2023-11-26 10:43:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-26 10:43:39,875 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 42 states have internal predecessors, (115), 11 states have call successors, (59), 7 states have call predecessors, (59), 15 states have return successors, (60), 11 states have call predecessors, (60), 11 states have call successors, (60) Word has length 194 [2023-11-26 10:43:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:39,883 INFO L225 Difference]: With dead ends: 511 [2023-11-26 10:43:39,883 INFO L226 Difference]: Without dead ends: 424 [2023-11-26 10:43:39,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3462 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3040, Invalid=10532, Unknown=0, NotChecked=0, Total=13572 [2023-11-26 10:43:39,891 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 929 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:39,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1103 Invalid, 2763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-26 10:43:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-26 10:43:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 284. [2023-11-26 10:43:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 201 states have (on average 1.36318407960199) internal successors, (274), 203 states have internal predecessors, (274), 64 states have call successors, (64), 18 states have call predecessors, (64), 18 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-11-26 10:43:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 402 transitions. [2023-11-26 10:43:40,002 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 402 transitions. Word has length 194 [2023-11-26 10:43:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:40,003 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 402 transitions. [2023-11-26 10:43:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 42 states have internal predecessors, (115), 11 states have call successors, (59), 7 states have call predecessors, (59), 15 states have return successors, (60), 11 states have call predecessors, (60), 11 states have call successors, (60) [2023-11-26 10:43:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 402 transitions. [2023-11-26 10:43:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-26 10:43:40,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:40,008 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:40,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:40,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:40,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1150628118, now seen corresponding path program 1 times [2023-11-26 10:43:40,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462996611] [2023-11-26 10:43:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:40,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79282110] [2023-11-26 10:43:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:40,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:43:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 897 proven. 378 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-11-26 10:43:43,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 72 proven. 105 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-26 10:43:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462996611] [2023-11-26 10:43:45,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:45,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79282110] [2023-11-26 10:43:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79282110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:45,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:45,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 35 [2023-11-26 10:43:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808524999] [2023-11-26 10:43:45,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-26 10:43:45,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-26 10:43:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 10:43:45,995 INFO L87 Difference]: Start difference. First operand 284 states and 402 transitions. Second operand has 35 states, 34 states have (on average 3.1176470588235294) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (59), 6 states have call predecessors, (59), 12 states have return successors, (61), 8 states have call predecessors, (61), 8 states have call successors, (61) [2023-11-26 10:43:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:54,240 INFO L93 Difference]: Finished difference Result 750 states and 1025 transitions. [2023-11-26 10:43:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-26 10:43:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.1176470588235294) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (59), 6 states have call predecessors, (59), 12 states have return successors, (61), 8 states have call predecessors, (61), 8 states have call successors, (61) Word has length 194 [2023-11-26 10:43:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:54,253 INFO L225 Difference]: With dead ends: 750 [2023-11-26 10:43:54,254 INFO L226 Difference]: Without dead ends: 467 [2023-11-26 10:43:54,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2771 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1891, Invalid=8009, Unknown=0, NotChecked=0, Total=9900 [2023-11-26 10:43:54,262 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 597 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:54,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1196 Invalid, 3438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-26 10:43:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-26 10:43:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 271. [2023-11-26 10:43:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 186 states have (on average 1.3118279569892473) internal successors, (244), 188 states have internal predecessors, (244), 64 states have call successors, (64), 20 states have call predecessors, (64), 20 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-11-26 10:43:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 372 transitions. [2023-11-26 10:43:54,370 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 372 transitions. Word has length 194 [2023-11-26 10:43:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:54,371 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 372 transitions. [2023-11-26 10:43:54,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.1176470588235294) internal successors, (106), 33 states have internal predecessors, (106), 8 states have call successors, (59), 6 states have call predecessors, (59), 12 states have return successors, (61), 8 states have call predecessors, (61), 8 states have call successors, (61) [2023-11-26 10:43:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 372 transitions. [2023-11-26 10:43:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-26 10:43:54,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:54,375 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:54,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:54,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:54,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1762506966, now seen corresponding path program 1 times [2023-11-26 10:43:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113847841] [2023-11-26 10:43:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:54,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:54,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706654130] [2023-11-26 10:43:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:54,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:54,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:54,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:54,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:43:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:54,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:54,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 10:43:54,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:54,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113847841] [2023-11-26 10:43:54,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:54,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706654130] [2023-11-26 10:43:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706654130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:54,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:54,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464587835] [2023-11-26 10:43:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:54,821 INFO L87 Difference]: Start difference. First operand 271 states and 372 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:43:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:54,934 INFO L93 Difference]: Finished difference Result 573 states and 794 transitions. [2023-11-26 10:43:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:54,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 194 [2023-11-26 10:43:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:54,943 INFO L225 Difference]: With dead ends: 573 [2023-11-26 10:43:54,943 INFO L226 Difference]: Without dead ends: 303 [2023-11-26 10:43:54,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 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 10:43:54,951 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 49 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:54,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 303 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-26 10:43:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 274. [2023-11-26 10:43:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 189 states have (on average 1.306878306878307) internal successors, (247), 191 states have internal predecessors, (247), 64 states have call successors, (64), 20 states have call predecessors, (64), 20 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-11-26 10:43:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 375 transitions. [2023-11-26 10:43:55,041 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 375 transitions. Word has length 194 [2023-11-26 10:43:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:55,042 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 375 transitions. [2023-11-26 10:43:55,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 10:43:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 375 transitions. [2023-11-26 10:43:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-26 10:43:55,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:55,046 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:55,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 10:43:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:55,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:55,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1661165038, now seen corresponding path program 1 times [2023-11-26 10:43:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:55,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326523691] [2023-11-26 10:43:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:55,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:55,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330313686] [2023-11-26 10:43:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:55,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:55,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:55,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22b9e041-868c-4951-865f-a7ca93ecac2e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:43:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:56,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-26 10:43:56,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1172 proven. 321 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-26 10:44:00,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:10,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:10,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326523691] [2023-11-26 10:44:10,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:10,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330313686] [2023-11-26 10:44:10,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330313686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:10,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:10,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-26 10:44:10,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148456349] [2023-11-26 10:44:10,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:10,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 10:44:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 10:44:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1194, Unknown=1, NotChecked=0, Total=1406 [2023-11-26 10:44:10,612 INFO L87 Difference]: Start difference. First operand 274 states and 375 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 28 states have internal predecessors, (78), 8 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31)