./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.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_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/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_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/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_60d4969c-9f7f-4014-aae1-fe5c719a5431/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 76c41dcfd5a0fc565e04810ec1e9f02e7d99352e7ba5541d180a675862fbcc19 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:00,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:00,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:00,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:00,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:01,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:01,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:01,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:01,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:01,016 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:01,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:01,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:01,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:01,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:01,021 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:01,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:01,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:01,023 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:01,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:01,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:01,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:01,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:01,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:01,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:01,028 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:01,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:01,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:01,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:01,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:01,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:01,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:01,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:01,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:01,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:01,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:01,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:01,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:01,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:01,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:01,038 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:01,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:01,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:01,040 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_60d4969c-9f7f-4014-aae1-fe5c719a5431/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76c41dcfd5a0fc565e04810ec1e9f02e7d99352e7ba5541d180a675862fbcc19 [2023-11-26 11:45:01,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:01,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:01,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:01,345 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:01,345 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:01,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-11-26 11:45:04,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:05,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:05,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-11-26 11:45:05,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/data/7d5e702c3/0594aa0ec6184ddc809ac2f9f2c77be4/FLAGb5c85363c [2023-11-26 11:45:05,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/data/7d5e702c3/0594aa0ec6184ddc809ac2f9f2c77be4 [2023-11-26 11:45:05,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:05,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:05,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:05,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:05,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:05,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:05,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ffee645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05, skipping insertion in model container [2023-11-26 11:45:05,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:05,182 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:05,404 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_60d4969c-9f7f-4014-aae1-fe5c719a5431/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i[916,929] [2023-11-26 11:45:05,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:05,741 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:05,755 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_60d4969c-9f7f-4014-aae1-fe5c719a5431/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i[916,929] [2023-11-26 11:45:05,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:05,936 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:05,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05 WrapperNode [2023-11-26 11:45:05,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:05,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:05,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:05,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:05,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:05,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,126 INFO L138 Inliner]: procedures = 26, calls = 131, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 929 [2023-11-26 11:45:06,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:06,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:06,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:06,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:06,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,223 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 11:45:06,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:06,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:06,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:06,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:06,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:06,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:06,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:06,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:45:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:45:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:06,679 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:06,681 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:07,987 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:08,068 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:08,068 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:08,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:08 BoogieIcfgContainer [2023-11-26 11:45:08,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:08,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:08,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:08,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:08,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:05" (1/3) ... [2023-11-26 11:45:08,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2d7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:08, skipping insertion in model container [2023-11-26 11:45:08,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05" (2/3) ... [2023-11-26 11:45:08,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2d7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:08, skipping insertion in model container [2023-11-26 11:45:08,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:08" (3/3) ... [2023-11-26 11:45:08,082 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-11-26 11:45:08,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:08,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:08,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:08,189 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;@2ffb0d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:08,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 229 states have internal predecessors, (374), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-26 11:45:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-11-26 11:45:08,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:08,294 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:08,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:08,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash 844148316, now seen corresponding path program 1 times [2023-11-26 11:45:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085001520] [2023-11-26 11:45:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085001520] [2023-11-26 11:45:08,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:45:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16715542] [2023-11-26 11:45:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:08,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:08,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:45:09,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 27378 trivial. 0 not checked. [2023-11-26 11:45:09,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16715542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:09,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983515280] [2023-11-26 11:45:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:09,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:09,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:09,835 INFO L87 Difference]: Start difference. First operand has 349 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 229 states have internal predecessors, (374), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) Second operand has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) [2023-11-26 11:45:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:09,944 INFO L93 Difference]: Finished difference Result 695 states and 1336 transitions. [2023-11-26 11:45:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) Word has length 748 [2023-11-26 11:45:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:09,961 INFO L225 Difference]: With dead ends: 695 [2023-11-26 11:45:09,962 INFO L226 Difference]: Without dead ends: 347 [2023-11-26 11:45:09,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 747 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 11:45:09,973 INFO L413 NwaCegarLoop]: 597 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, 597 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 11:45:09,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 597 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-26 11:45:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-26 11:45:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.60352422907489) internal successors, (364), 227 states have internal predecessors, (364), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-26 11:45:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 600 transitions. [2023-11-26 11:45:10,107 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 600 transitions. Word has length 748 [2023-11-26 11:45:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:10,108 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 600 transitions. [2023-11-26 11:45:10,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) [2023-11-26 11:45:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 600 transitions. [2023-11-26 11:45:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-11-26 11:45:10,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:10,178 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:10,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:10,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:10,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:10,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1737313448, now seen corresponding path program 1 times [2023-11-26 11:45:10,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232243195] [2023-11-26 11:45:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277903743] [2023-11-26 11:45:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:10,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:10,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:10,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:11,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:11,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232243195] [2023-11-26 11:45:11,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277903743] [2023-11-26 11:45:11,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277903743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:11,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:11,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629716486] [2023-11-26 11:45:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:11,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:11,267 INFO L87 Difference]: Start difference. First operand 347 states and 600 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:11,410 INFO L93 Difference]: Finished difference Result 1039 states and 1798 transitions. [2023-11-26 11:45:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:11,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 749 [2023-11-26 11:45:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:11,424 INFO L225 Difference]: With dead ends: 1039 [2023-11-26 11:45:11,424 INFO L226 Difference]: Without dead ends: 693 [2023-11-26 11:45:11,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 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 11:45:11,428 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 596 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:11,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-26 11:45:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2023-11-26 11:45:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 452 states have (on average 1.6039823008849559) internal successors, (725), 452 states have internal predecessors, (725), 236 states have call successors, (236), 2 states have call predecessors, (236), 2 states have return successors, (236), 236 states have call predecessors, (236), 236 states have call successors, (236) [2023-11-26 11:45:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1197 transitions. [2023-11-26 11:45:11,623 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1197 transitions. Word has length 749 [2023-11-26 11:45:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:11,626 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1197 transitions. [2023-11-26 11:45:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1197 transitions. [2023-11-26 11:45:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-11-26 11:45:11,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:11,637 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:11,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:11,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:11,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:11,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 139749782, now seen corresponding path program 1 times [2023-11-26 11:45:11,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:11,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002937142] [2023-11-26 11:45:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:12,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822481619] [2023-11-26 11:45:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:12,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:12,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:12,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:12,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:12,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:12,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:12,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002937142] [2023-11-26 11:45:12,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822481619] [2023-11-26 11:45:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822481619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:12,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104016813] [2023-11-26 11:45:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:12,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:12,722 INFO L87 Difference]: Start difference. First operand 691 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:12,816 INFO L93 Difference]: Finished difference Result 1389 states and 2409 transitions. [2023-11-26 11:45:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 749 [2023-11-26 11:45:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:12,827 INFO L225 Difference]: With dead ends: 1389 [2023-11-26 11:45:12,827 INFO L226 Difference]: Without dead ends: 699 [2023-11-26 11:45:12,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 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 11:45:12,832 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 4 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:12,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1181 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-26 11:45:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-26 11:45:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 458 states have (on average 1.6004366812227073) internal successors, (733), 458 states have internal predecessors, (733), 236 states have call successors, (236), 2 states have call predecessors, (236), 2 states have return successors, (236), 236 states have call predecessors, (236), 236 states have call successors, (236) [2023-11-26 11:45:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1205 transitions. [2023-11-26 11:45:12,994 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1205 transitions. Word has length 749 [2023-11-26 11:45:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:12,997 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1205 transitions. [2023-11-26 11:45:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1205 transitions. [2023-11-26 11:45:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-26 11:45:13,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:13,007 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:13,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:45:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:13,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:13,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash -517947355, now seen corresponding path program 1 times [2023-11-26 11:45:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:13,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453218917] [2023-11-26 11:45:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:13,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:13,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919753358] [2023-11-26 11:45:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:13,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:13,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:13,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:14,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453218917] [2023-11-26 11:45:14,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:14,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919753358] [2023-11-26 11:45:14,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919753358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:14,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:14,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337678418] [2023-11-26 11:45:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:14,156 INFO L87 Difference]: Start difference. First operand 697 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:14,698 INFO L93 Difference]: Finished difference Result 2957 states and 5131 transitions. [2023-11-26 11:45:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 750 [2023-11-26 11:45:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:14,721 INFO L225 Difference]: With dead ends: 2957 [2023-11-26 11:45:14,721 INFO L226 Difference]: Without dead ends: 2261 [2023-11-26 11:45:14,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:14,727 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1261 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:14,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2575 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2023-11-26 11:45:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1449. [2023-11-26 11:45:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1096 states have (on average 1.707116788321168) internal successors, (1871), 1098 states have internal predecessors, (1871), 348 states have call successors, (348), 4 states have call predecessors, (348), 4 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2023-11-26 11:45:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2567 transitions. [2023-11-26 11:45:15,235 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2567 transitions. Word has length 750 [2023-11-26 11:45:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:15,237 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2567 transitions. [2023-11-26 11:45:15,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2567 transitions. [2023-11-26 11:45:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-26 11:45:15,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:15,250 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:15,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:15,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:15,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:15,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -796370585, now seen corresponding path program 1 times [2023-11-26 11:45:15,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:15,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812001730] [2023-11-26 11:45:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:15,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:15,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916218237] [2023-11-26 11:45:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:15,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:15,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:15,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:45:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:16,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:16,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812001730] [2023-11-26 11:45:16,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916218237] [2023-11-26 11:45:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916218237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136570923] [2023-11-26 11:45:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:16,503 INFO L87 Difference]: Start difference. First operand 1449 states and 2567 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:17,241 INFO L93 Difference]: Finished difference Result 5315 states and 9271 transitions. [2023-11-26 11:45:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:17,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 750 [2023-11-26 11:45:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:17,283 INFO L225 Difference]: With dead ends: 5315 [2023-11-26 11:45:17,283 INFO L226 Difference]: Without dead ends: 3867 [2023-11-26 11:45:17,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:17,295 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1261 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:17,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2005 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2023-11-26 11:45:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 2543. [2023-11-26 11:45:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 1994 states have (on average 1.714643931795386) internal successors, (3419), 2000 states have internal predecessors, (3419), 540 states have call successors, (540), 8 states have call predecessors, (540), 8 states have return successors, (540), 534 states have call predecessors, (540), 540 states have call successors, (540) [2023-11-26 11:45:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4499 transitions. [2023-11-26 11:45:17,832 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4499 transitions. Word has length 750 [2023-11-26 11:45:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:17,834 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 4499 transitions. [2023-11-26 11:45:17,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4499 transitions. [2023-11-26 11:45:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-26 11:45:17,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:17,849 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:17,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:18,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:18,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:18,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash 589832809, now seen corresponding path program 1 times [2023-11-26 11:45:18,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:18,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060614821] [2023-11-26 11:45:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:18,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:18,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129706649] [2023-11-26 11:45:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:18,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:18,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:18,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:45:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:18,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:18,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:18,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060614821] [2023-11-26 11:45:18,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:18,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129706649] [2023-11-26 11:45:18,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129706649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:18,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:18,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:18,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642720308] [2023-11-26 11:45:18,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:18,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:18,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:18,991 INFO L87 Difference]: Start difference. First operand 2543 states and 4499 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:19,395 INFO L93 Difference]: Finished difference Result 6671 states and 11734 transitions. [2023-11-26 11:45:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 750 [2023-11-26 11:45:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:19,434 INFO L225 Difference]: With dead ends: 6671 [2023-11-26 11:45:19,435 INFO L226 Difference]: Without dead ends: 4129 [2023-11-26 11:45:19,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 748 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 11:45:19,447 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 273 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:19,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1167 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2023-11-26 11:45:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 4123. [2023-11-26 11:45:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4123 states, 3158 states have (on average 1.6842938568714376) internal successors, (5319), 3172 states have internal predecessors, (5319), 948 states have call successors, (948), 16 states have call predecessors, (948), 16 states have return successors, (948), 934 states have call predecessors, (948), 948 states have call successors, (948) [2023-11-26 11:45:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 7215 transitions. [2023-11-26 11:45:20,025 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 7215 transitions. Word has length 750 [2023-11-26 11:45:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:20,027 INFO L495 AbstractCegarLoop]: Abstraction has 4123 states and 7215 transitions. [2023-11-26 11:45:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 7215 transitions. [2023-11-26 11:45:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-26 11:45:20,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:20,046 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:20,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:20,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:20,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash -93542338, now seen corresponding path program 1 times [2023-11-26 11:45:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:20,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039364984] [2023-11-26 11:45:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:20,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522611382] [2023-11-26 11:45:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:20,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:20,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:20,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:45:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:21,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:21,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:21,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039364984] [2023-11-26 11:45:21,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522611382] [2023-11-26 11:45:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522611382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:21,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:21,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217923117] [2023-11-26 11:45:21,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:21,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:21,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:21,178 INFO L87 Difference]: Start difference. First operand 4123 states and 7215 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:21,870 INFO L93 Difference]: Finished difference Result 11931 states and 20811 transitions. [2023-11-26 11:45:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-26 11:45:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:21,945 INFO L225 Difference]: With dead ends: 11931 [2023-11-26 11:45:21,946 INFO L226 Difference]: Without dead ends: 7809 [2023-11-26 11:45:21,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 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 11:45:21,964 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 492 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:21,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1509 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2023-11-26 11:45:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 4887. [2023-11-26 11:45:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 3922 states have (on average 1.7106068332483426) internal successors, (6709), 3936 states have internal predecessors, (6709), 948 states have call successors, (948), 16 states have call predecessors, (948), 16 states have return successors, (948), 934 states have call predecessors, (948), 948 states have call successors, (948) [2023-11-26 11:45:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 8605 transitions. [2023-11-26 11:45:22,735 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 8605 transitions. Word has length 751 [2023-11-26 11:45:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:22,737 INFO L495 AbstractCegarLoop]: Abstraction has 4887 states and 8605 transitions. [2023-11-26 11:45:22,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 8605 transitions. [2023-11-26 11:45:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-26 11:45:22,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:22,758 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:22,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:22,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:22,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:22,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 799944000, now seen corresponding path program 1 times [2023-11-26 11:45:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785281491] [2023-11-26 11:45:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:23,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134175115] [2023-11-26 11:45:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:23,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:23,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:23,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:23,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:45:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:23,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:23,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:23,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785281491] [2023-11-26 11:45:23,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134175115] [2023-11-26 11:45:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134175115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193410207] [2023-11-26 11:45:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:23,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:23,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:23,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:23,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:23,791 INFO L87 Difference]: Start difference. First operand 4887 states and 8605 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:25,735 INFO L93 Difference]: Finished difference Result 17442 states and 30507 transitions. [2023-11-26 11:45:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:25,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-26 11:45:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:25,813 INFO L225 Difference]: With dead ends: 17442 [2023-11-26 11:45:25,813 INFO L226 Difference]: Without dead ends: 12556 [2023-11-26 11:45:25,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:45:25,832 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 999 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:25,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 2621 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:45:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2023-11-26 11:45:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 11949. [2023-11-26 11:45:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11949 states, 9084 states have (on average 1.6621532364597094) internal successors, (15099), 9131 states have internal predecessors, (15099), 2812 states have call successors, (2812), 52 states have call predecessors, (2812), 52 states have return successors, (2812), 2765 states have call predecessors, (2812), 2812 states have call successors, (2812) [2023-11-26 11:45:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11949 states to 11949 states and 20723 transitions. [2023-11-26 11:45:27,674 INFO L78 Accepts]: Start accepts. Automaton has 11949 states and 20723 transitions. Word has length 751 [2023-11-26 11:45:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:27,676 INFO L495 AbstractCegarLoop]: Abstraction has 11949 states and 20723 transitions. [2023-11-26 11:45:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 11949 states and 20723 transitions. [2023-11-26 11:45:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-26 11:45:27,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:27,706 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:27,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:27,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:27,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:27,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:27,917 INFO L85 PathProgramCache]: Analyzing trace with hash 822576254, now seen corresponding path program 1 times [2023-11-26 11:45:27,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860579301] [2023-11-26 11:45:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:27,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:28,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:28,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412277091] [2023-11-26 11:45:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:45:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:28,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860579301] [2023-11-26 11:45:28,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412277091] [2023-11-26 11:45:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412277091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:28,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322594294] [2023-11-26 11:45:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:28,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:28,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:28,847 INFO L87 Difference]: Start difference. First operand 11949 states and 20723 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:30,660 INFO L93 Difference]: Finished difference Result 35191 states and 61078 transitions. [2023-11-26 11:45:30,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:30,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-26 11:45:30,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:30,751 INFO L225 Difference]: With dead ends: 35191 [2023-11-26 11:45:30,751 INFO L226 Difference]: Without dead ends: 23357 [2023-11-26 11:45:30,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 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 11:45:30,795 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 342 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:30,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1180 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23357 states. [2023-11-26 11:45:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23357 to 23351. [2023-11-26 11:45:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23351 states, 17876 states have (on average 1.663627209666592) internal successors, (29739), 17971 states have internal predecessors, (29739), 5372 states have call successors, (5372), 102 states have call predecessors, (5372), 102 states have return successors, (5372), 5277 states have call predecessors, (5372), 5372 states have call successors, (5372) [2023-11-26 11:45:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23351 states to 23351 states and 40483 transitions. [2023-11-26 11:45:33,632 INFO L78 Accepts]: Start accepts. Automaton has 23351 states and 40483 transitions. Word has length 751 [2023-11-26 11:45:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:33,634 INFO L495 AbstractCegarLoop]: Abstraction has 23351 states and 40483 transitions. [2023-11-26 11:45:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23351 states and 40483 transitions. [2023-11-26 11:45:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-26 11:45:33,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:33,689 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:33,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:33,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:33,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1080741692, now seen corresponding path program 1 times [2023-11-26 11:45:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941668255] [2023-11-26 11:45:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:34,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:34,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750763147] [2023-11-26 11:45:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:34,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:34,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:34,018 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:34,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:45:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:34,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:34,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-26 11:45:34,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941668255] [2023-11-26 11:45:34,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750763147] [2023-11-26 11:45:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750763147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:34,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637868044] [2023-11-26 11:45:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:34,802 INFO L87 Difference]: Start difference. First operand 23351 states and 40483 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:37,497 INFO L93 Difference]: Finished difference Result 68271 states and 118385 transitions. [2023-11-26 11:45:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:37,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-26 11:45:37,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:37,683 INFO L225 Difference]: With dead ends: 68271 [2023-11-26 11:45:37,683 INFO L226 Difference]: Without dead ends: 45035 [2023-11-26 11:45:37,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 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 11:45:37,751 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 345 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:37,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1262 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45035 states. [2023-11-26 11:45:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45035 to 44937. [2023-11-26 11:45:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44937 states, 34949 states have (on average 1.665741509056053) internal successors, (58216), 35140 states have internal predecessors, (58216), 9788 states have call successors, (9788), 199 states have call predecessors, (9788), 199 states have return successors, (9788), 9597 states have call predecessors, (9788), 9788 states have call successors, (9788) [2023-11-26 11:45:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44937 states to 44937 states and 77792 transitions. [2023-11-26 11:45:42,485 INFO L78 Accepts]: Start accepts. Automaton has 44937 states and 77792 transitions. Word has length 751 [2023-11-26 11:45:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:42,488 INFO L495 AbstractCegarLoop]: Abstraction has 44937 states and 77792 transitions. [2023-11-26 11:45:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-26 11:45:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 44937 states and 77792 transitions. [2023-11-26 11:45:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-26 11:45:42,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:42,570 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:42,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:42,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:45:42,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:42,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1337162374, now seen corresponding path program 1 times [2023-11-26 11:45:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139750290] [2023-11-26 11:45:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:42,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:42,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225813018] [2023-11-26 11:45:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:42,897 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:42,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60d4969c-9f7f-4014-aae1-fe5c719a5431/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:45:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:43,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:45:44,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 13833 proven. 189 refuted. 0 times theorem prover too weak. 13590 trivial. 0 not checked. [2023-11-26 11:45:44,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 162 proven. 189 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-11-26 11:45:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139750290] [2023-11-26 11:45:45,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225813018] [2023-11-26 11:45:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225813018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:45,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:45:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212546891] [2023-11-26 11:45:45,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:45,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:45,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:45,636 INFO L87 Difference]: Start difference. First operand 44937 states and 77792 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182)