./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-35.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_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/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_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-35.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/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_c935a10e-9661-4ddb-a4eb-753c6d280ebe/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 e2827751d54d31813193a5e232b3cfb1b986bd1ad92439dc43412e6cd0eff047 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:00,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:00,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:41:00,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:00,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:00,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:00,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:00,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:00,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:00,481 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:00,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:00,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:00,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:00,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:00,487 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:00,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:00,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:00,489 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:00,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:00,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:00,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:00,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:00,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:00,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:00,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:00,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:00,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:00,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:00,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:00,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:00,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:00,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:00,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:00,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:00,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:00,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:00,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:00,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:00,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:00,501 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:00,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:00,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:00,502 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_c935a10e-9661-4ddb-a4eb-753c6d280ebe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2827751d54d31813193a5e232b3cfb1b986bd1ad92439dc43412e6cd0eff047 [2023-11-26 10:41:00,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:00,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:00,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:00,874 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:00,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:00,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-35.i [2023-11-26 10:41:04,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:04,281 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:04,281 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-35.i [2023-11-26 10:41:04,294 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/data/9d80bdca1/974db349a8294261ac222c01e88e302c/FLAG1a61582b1 [2023-11-26 10:41:04,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/data/9d80bdca1/974db349a8294261ac222c01e88e302c [2023-11-26 10:41:04,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:04,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:04,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:04,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:04,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:04,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:04,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04, skipping insertion in model container [2023-11-26 10:41:04,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:04,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:04,536 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_c935a10e-9661-4ddb-a4eb-753c6d280ebe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-35.i[916,929] [2023-11-26 10:41:04,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:04,681 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:04,707 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_c935a10e-9661-4ddb-a4eb-753c6d280ebe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-35.i[916,929] [2023-11-26 10:41:04,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:04,818 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:04,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04 WrapperNode [2023-11-26 10:41:04,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:04,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:04,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:04,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:04,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:04,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:04,915 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 372 [2023-11-26 10:41:04,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:04,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:04,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:04,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:04,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:04,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:04,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,020 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:41:05,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:05,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:05,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:05,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:05,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (1/1) ... [2023-11-26 10:41:05,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:05,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:05,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:05,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:05,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:05,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:41:05,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:41:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:05,355 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:05,357 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:06,131 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:06,168 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:06,168 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:41:06,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:06 BoogieIcfgContainer [2023-11-26 10:41:06,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:06,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:06,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:06,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:06,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:04" (1/3) ... [2023-11-26 10:41:06,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:06, skipping insertion in model container [2023-11-26 10:41:06,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:04" (2/3) ... [2023-11-26 10:41:06,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:06, skipping insertion in model container [2023-11-26 10:41:06,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:06" (3/3) ... [2023-11-26 10:41:06,179 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-35.i [2023-11-26 10:41:06,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:06,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:41:06,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:06,265 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;@542fd040, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:06,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:41:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 87 states have internal predecessors, (126), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:41:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-26 10:41:06,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:06,301 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:06,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:06,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1016803514, now seen corresponding path program 1 times [2023-11-26 10:41:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:06,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216126983] [2023-11-26 10:41:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:06,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216126983] [2023-11-26 10:41:06,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:06,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784438481] [2023-11-26 10:41:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:06,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:06,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:06,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:07,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:41:07,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2023-11-26 10:41:07,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784438481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:07,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:07,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:07,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700907109] [2023-11-26 10:41:07,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:07,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:41:07,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:41:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:07,229 INFO L87 Difference]: Start difference. First operand has 149 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 87 states have internal predecessors, (126), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-26 10:41:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:07,365 INFO L93 Difference]: Finished difference Result 295 states and 550 transitions. [2023-11-26 10:41:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:41:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) Word has length 364 [2023-11-26 10:41:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:07,384 INFO L225 Difference]: With dead ends: 295 [2023-11-26 10:41:07,385 INFO L226 Difference]: Without dead ends: 147 [2023-11-26 10:41:07,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:07,404 INFO L413 NwaCegarLoop]: 238 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, 238 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:07,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-26 10:41:07,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-26 10:41:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 85 states have (on average 1.423529411764706) internal successors, (121), 85 states have internal predecessors, (121), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:41:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 241 transitions. [2023-11-26 10:41:07,486 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 241 transitions. Word has length 364 [2023-11-26 10:41:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:07,486 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 241 transitions. [2023-11-26 10:41:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-26 10:41:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 241 transitions. [2023-11-26 10:41:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-26 10:41:07,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:07,498 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:07,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:07,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:41:07,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:07,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:07,707 INFO L85 PathProgramCache]: Analyzing trace with hash 855442738, now seen corresponding path program 1 times [2023-11-26 10:41:07,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:07,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6433241] [2023-11-26 10:41:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:07,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:07,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:07,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981721103] [2023-11-26 10:41:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:07,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:07,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:07,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:08,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:41:08,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-11-26 10:41:08,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:08,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6433241] [2023-11-26 10:41:08,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981721103] [2023-11-26 10:41:08,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981721103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:08,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:08,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:08,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591616364] [2023-11-26 10:41:08,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:08,345 INFO L87 Difference]: Start difference. First operand 147 states and 241 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:08,420 INFO L93 Difference]: Finished difference Result 293 states and 481 transitions. [2023-11-26 10:41:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:08,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 364 [2023-11-26 10:41:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:08,426 INFO L225 Difference]: With dead ends: 293 [2023-11-26 10:41:08,427 INFO L226 Difference]: Without dead ends: 147 [2023-11-26 10:41:08,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:08,429 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 18 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:08,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 452 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-26 10:41:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-26 10:41:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 85 states have (on average 1.411764705882353) internal successors, (120), 85 states have internal predecessors, (120), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:41:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 240 transitions. [2023-11-26 10:41:08,459 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 240 transitions. Word has length 364 [2023-11-26 10:41:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:08,462 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 240 transitions. [2023-11-26 10:41:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 240 transitions. [2023-11-26 10:41:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-26 10:41:08,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:08,472 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:08,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:08,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 10:41:08,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:08,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1106707692, now seen corresponding path program 1 times [2023-11-26 10:41:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:08,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145428372] [2023-11-26 10:41:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:08,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:08,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690614551] [2023-11-26 10:41:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:08,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:08,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:09,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:41:09,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-11-26 10:41:09,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145428372] [2023-11-26 10:41:09,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690614551] [2023-11-26 10:41:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690614551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:09,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:09,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975377463] [2023-11-26 10:41:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:09,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:09,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:09,216 INFO L87 Difference]: Start difference. First operand 147 states and 240 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:09,315 INFO L93 Difference]: Finished difference Result 376 states and 613 transitions. [2023-11-26 10:41:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:09,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 365 [2023-11-26 10:41:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:09,327 INFO L225 Difference]: With dead ends: 376 [2023-11-26 10:41:09,327 INFO L226 Difference]: Without dead ends: 230 [2023-11-26 10:41:09,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:09,332 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 126 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:09,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 464 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-26 10:41:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2023-11-26 10:41:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.4583333333333333) internal successors, (210), 145 states have internal predecessors, (210), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-26 10:41:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 370 transitions. [2023-11-26 10:41:09,414 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 370 transitions. Word has length 365 [2023-11-26 10:41:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:09,416 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 370 transitions. [2023-11-26 10:41:09,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 370 transitions. [2023-11-26 10:41:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-26 10:41:09,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:09,423 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:09,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 10:41:09,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:09,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -698730642, now seen corresponding path program 1 times [2023-11-26 10:41:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396568897] [2023-11-26 10:41:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:09,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:09,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:09,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796377338] [2023-11-26 10:41:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:09,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:09,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:09,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:09,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:41:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:10,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:41:10,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-11-26 10:41:10,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396568897] [2023-11-26 10:41:10,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796377338] [2023-11-26 10:41:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796377338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:10,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:10,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:10,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182549771] [2023-11-26 10:41:10,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:10,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:10,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:10,131 INFO L87 Difference]: Start difference. First operand 227 states and 370 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:10,369 INFO L93 Difference]: Finished difference Result 575 states and 913 transitions. [2023-11-26 10:41:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 365 [2023-11-26 10:41:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:10,382 INFO L225 Difference]: With dead ends: 575 [2023-11-26 10:41:10,382 INFO L226 Difference]: Without dead ends: 349 [2023-11-26 10:41:10,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:10,389 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 106 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:10,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 722 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-26 10:41:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 303. [2023-11-26 10:41:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 204 states have (on average 1.4411764705882353) internal successors, (294), 207 states have internal predecessors, (294), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 10:41:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 482 transitions. [2023-11-26 10:41:10,464 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 482 transitions. Word has length 365 [2023-11-26 10:41:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:10,467 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 482 transitions. [2023-11-26 10:41:10,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 482 transitions. [2023-11-26 10:41:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-26 10:41:10,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:10,474 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:10,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:10,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:10,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:10,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1508077268, now seen corresponding path program 1 times [2023-11-26 10:41:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647743544] [2023-11-26 10:41:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:10,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:10,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:10,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571872247] [2023-11-26 10:41:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:10,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:10,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:10,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:10,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:41:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:11,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:41:11,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3599 proven. 87 refuted. 0 times theorem prover too weak. 3394 trivial. 0 not checked. [2023-11-26 10:41:11,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 90 proven. 87 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-11-26 10:41:11,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:11,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647743544] [2023-11-26 10:41:11,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:11,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571872247] [2023-11-26 10:41:11,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571872247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:11,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:41:11,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 10:41:11,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192289079] [2023-11-26 10:41:11,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:11,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:41:11,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:41:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:41:11,680 INFO L87 Difference]: Start difference. First operand 303 states and 482 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 3 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 3 states have call predecessors, (90), 3 states have call successors, (90) [2023-11-26 10:41:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:12,366 INFO L93 Difference]: Finished difference Result 619 states and 978 transitions. [2023-11-26 10:41:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:41:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 3 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 3 states have call predecessors, (90), 3 states have call successors, (90) Word has length 365 [2023-11-26 10:41:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:12,372 INFO L225 Difference]: With dead ends: 619 [2023-11-26 10:41:12,372 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 10:41:12,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:41:12,375 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 233 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:12,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 695 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:41:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 10:41:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2023-11-26 10:41:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 209 states have (on average 1.430622009569378) internal successors, (299), 212 states have internal predecessors, (299), 94 states have call successors, (94), 5 states have call predecessors, (94), 5 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 10:41:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 487 transitions. [2023-11-26 10:41:12,418 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 487 transitions. Word has length 365 [2023-11-26 10:41:12,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:12,419 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 487 transitions. [2023-11-26 10:41:12,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 3 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 3 states have call predecessors, (90), 3 states have call successors, (90) [2023-11-26 10:41:12,420 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 487 transitions. [2023-11-26 10:41:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-26 10:41:12,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:12,424 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:12,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:12,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:12,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:12,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash -789712239, now seen corresponding path program 1 times [2023-11-26 10:41:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398648608] [2023-11-26 10:41:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:12,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:12,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372792061] [2023-11-26 10:41:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:12,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:12,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:12,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:41:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:12,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:41:13,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3579 proven. 81 refuted. 0 times theorem prover too weak. 3420 trivial. 0 not checked. [2023-11-26 10:41:13,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 96 proven. 81 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-11-26 10:41:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398648608] [2023-11-26 10:41:13,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372792061] [2023-11-26 10:41:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372792061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:13,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:41:13,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 10:41:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833207355] [2023-11-26 10:41:13,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:41:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:41:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:41:13,599 INFO L87 Difference]: Start difference. First operand 309 states and 487 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2023-11-26 10:41:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:14,245 INFO L93 Difference]: Finished difference Result 629 states and 984 transitions. [2023-11-26 10:41:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:41:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 366 [2023-11-26 10:41:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:14,250 INFO L225 Difference]: With dead ends: 629 [2023-11-26 10:41:14,250 INFO L226 Difference]: Without dead ends: 321 [2023-11-26 10:41:14,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:41:14,252 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 227 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 500 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:41:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-26 10:41:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 311. [2023-11-26 10:41:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 210 states have (on average 1.4095238095238096) internal successors, (296), 213 states have internal predecessors, (296), 94 states have call successors, (94), 6 states have call predecessors, (94), 6 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 10:41:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 484 transitions. [2023-11-26 10:41:14,297 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 484 transitions. Word has length 366 [2023-11-26 10:41:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:14,298 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 484 transitions. [2023-11-26 10:41:14,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2023-11-26 10:41:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 484 transitions. [2023-11-26 10:41:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-26 10:41:14,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:14,302 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:14,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:14,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:14,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:14,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1133515795, now seen corresponding path program 1 times [2023-11-26 10:41:14,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:14,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071879130] [2023-11-26 10:41:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:14,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:14,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:14,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618611149] [2023-11-26 10:41:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:14,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:14,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:14,569 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:14,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:41:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:14,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:41:14,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3740 proven. 165 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2023-11-26 10:41:15,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 183 proven. 168 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2023-11-26 10:41:16,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071879130] [2023-11-26 10:41:16,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618611149] [2023-11-26 10:41:16,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618611149] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:16,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:41:16,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-26 10:41:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619649992] [2023-11-26 10:41:16,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 10:41:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:16,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:41:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:41:16,327 INFO L87 Difference]: Start difference. First operand 311 states and 484 transitions. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 5 states have call successors, (89), 3 states have call predecessors, (89), 7 states have return successors, (90), 5 states have call predecessors, (90), 5 states have call successors, (90) [2023-11-26 10:41:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:17,053 INFO L93 Difference]: Finished difference Result 633 states and 978 transitions. [2023-11-26 10:41:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:41:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 5 states have call successors, (89), 3 states have call predecessors, (89), 7 states have return successors, (90), 5 states have call predecessors, (90), 5 states have call successors, (90) Word has length 366 [2023-11-26 10:41:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:17,064 INFO L225 Difference]: With dead ends: 633 [2023-11-26 10:41:17,064 INFO L226 Difference]: Without dead ends: 323 [2023-11-26 10:41:17,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2023-11-26 10:41:17,067 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 321 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:17,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 473 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:41:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-26 10:41:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 313. [2023-11-26 10:41:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 211 states have (on average 1.3981042654028435) internal successors, (295), 214 states have internal predecessors, (295), 94 states have call successors, (94), 7 states have call predecessors, (94), 7 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 10:41:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 483 transitions. [2023-11-26 10:41:17,109 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 483 transitions. Word has length 366 [2023-11-26 10:41:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:17,110 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 483 transitions. [2023-11-26 10:41:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 5 states have call successors, (89), 3 states have call predecessors, (89), 7 states have return successors, (90), 5 states have call predecessors, (90), 5 states have call successors, (90) [2023-11-26 10:41:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 483 transitions. [2023-11-26 10:41:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-26 10:41:17,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:17,115 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:17,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:17,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:17,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:17,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:17,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1648978393, now seen corresponding path program 1 times [2023-11-26 10:41:17,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:17,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811712555] [2023-11-26 10:41:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:17,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:17,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559883297] [2023-11-26 10:41:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:17,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:17,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:17,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:17,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:41:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:17,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:41:17,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-11-26 10:41:17,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:17,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:17,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811712555] [2023-11-26 10:41:17,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:17,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559883297] [2023-11-26 10:41:17,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559883297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:17,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:17,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:17,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013517416] [2023-11-26 10:41:17,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:17,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:17,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:17,787 INFO L87 Difference]: Start difference. First operand 313 states and 483 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:18,227 INFO L93 Difference]: Finished difference Result 923 states and 1424 transitions. [2023-11-26 10:41:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 367 [2023-11-26 10:41:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:18,234 INFO L225 Difference]: With dead ends: 923 [2023-11-26 10:41:18,235 INFO L226 Difference]: Without dead ends: 611 [2023-11-26 10:41:18,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:18,238 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 302 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:18,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 748 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:41:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-26 10:41:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 339. [2023-11-26 10:41:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 237 states have (on average 1.4135021097046414) internal successors, (335), 240 states have internal predecessors, (335), 94 states have call successors, (94), 7 states have call predecessors, (94), 7 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 10:41:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 523 transitions. [2023-11-26 10:41:18,300 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 523 transitions. Word has length 367 [2023-11-26 10:41:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:18,301 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 523 transitions. [2023-11-26 10:41:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 523 transitions. [2023-11-26 10:41:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-26 10:41:18,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:18,306 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:18,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 10:41:18,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:18,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1135577699, now seen corresponding path program 1 times [2023-11-26 10:41:18,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:18,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170898951] [2023-11-26 10:41:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:18,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748154839] [2023-11-26 10:41:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:18,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:18,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:18,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:18,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:41:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:18,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:41:18,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-11-26 10:41:18,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170898951] [2023-11-26 10:41:18,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748154839] [2023-11-26 10:41:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748154839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:41:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585246837] [2023-11-26 10:41:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:41:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:41:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:18,992 INFO L87 Difference]: Start difference. First operand 339 states and 523 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:19,721 INFO L93 Difference]: Finished difference Result 1005 states and 1540 transitions. [2023-11-26 10:41:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 367 [2023-11-26 10:41:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:19,729 INFO L225 Difference]: With dead ends: 1005 [2023-11-26 10:41:19,729 INFO L226 Difference]: Without dead ends: 667 [2023-11-26 10:41:19,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:19,731 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 288 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:19,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1555 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:41:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-26 10:41:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 345. [2023-11-26 10:41:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 243 states have (on average 1.4115226337448559) internal successors, (343), 246 states have internal predecessors, (343), 94 states have call successors, (94), 7 states have call predecessors, (94), 7 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 10:41:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 531 transitions. [2023-11-26 10:41:19,793 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 531 transitions. Word has length 367 [2023-11-26 10:41:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:19,794 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 531 transitions. [2023-11-26 10:41:19,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 531 transitions. [2023-11-26 10:41:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-26 10:41:19,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:19,799 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:19,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:20,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:20,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:20,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1944924325, now seen corresponding path program 1 times [2023-11-26 10:41:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:20,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296695661] [2023-11-26 10:41:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:20,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728275558] [2023-11-26 10:41:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:20,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:20,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:20,071 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:20,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:41:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:20,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 10:41:20,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 572 proven. 342 refuted. 0 times theorem prover too weak. 6166 trivial. 0 not checked. [2023-11-26 10:41:23,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-11-26 10:41:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296695661] [2023-11-26 10:41:23,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728275558] [2023-11-26 10:41:23,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728275558] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:23,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:23,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-11-26 10:41:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012955875] [2023-11-26 10:41:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:23,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:41:23,459 INFO L87 Difference]: Start difference. First operand 345 states and 531 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:23,861 INFO L93 Difference]: Finished difference Result 1157 states and 1776 transitions. [2023-11-26 10:41:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 367 [2023-11-26 10:41:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:23,871 INFO L225 Difference]: With dead ends: 1157 [2023-11-26 10:41:23,871 INFO L226 Difference]: Without dead ends: 813 [2023-11-26 10:41:23,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:41:23,876 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 210 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:23,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 708 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:41:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-11-26 10:41:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 687. [2023-11-26 10:41:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 484 states have (on average 1.4090909090909092) internal successors, (682), 490 states have internal predecessors, (682), 188 states have call successors, (188), 14 states have call predecessors, (188), 14 states have return successors, (188), 182 states have call predecessors, (188), 188 states have call successors, (188) [2023-11-26 10:41:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1058 transitions. [2023-11-26 10:41:24,043 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1058 transitions. Word has length 367 [2023-11-26 10:41:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:24,045 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1058 transitions. [2023-11-26 10:41:24,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-11-26 10:41:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1058 transitions. [2023-11-26 10:41:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-26 10:41:24,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:24,051 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:24,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:24,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:24,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:24,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 355898265, now seen corresponding path program 1 times [2023-11-26 10:41:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579708536] [2023-11-26 10:41:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:24,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:24,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575885395] [2023-11-26 10:41:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:24,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:24,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:24,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:24,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935a10e-9661-4ddb-a4eb-753c6d280ebe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:41:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:24,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 10:41:24,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1667 proven. 39 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2023-11-26 10:41:25,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:34,980 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse63 (mod c_~var_1_51~0 256)) (.cse62 (mod c_~var_1_52~0 256))) (let ((.cse3 (+ .cse63 (* (- 1) .cse62))) (.cse2 (mod c_~var_1_50~0 256))) (let ((.cse7 (< 1 c_~var_1_35~0)) (.cse14 (< c_~var_1_35~0 2)) (.cse21 (forall ((v_z_55 Int)) (let ((.cse64 (mod v_z_55 .cse2))) (or (< .cse64 0) (< 255 v_z_55) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 (div .cse64 .cse3))))))) (.cse0 (< .cse62 (+ .cse63 1)))) (and (or .cse0 (forall ((v_z_55 Int)) (let ((.cse1 (div (mod v_z_55 .cse2) .cse3))) (or (< 255 v_z_55) (< 0 .cse1) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 .cse1)))))) (or .cse0 (and (forall ((v_z_7 Int)) (let ((.cse4 (mod v_z_7 .cse2))) (let ((.cse5 (div .cse4 .cse3))) (or (< 0 (+ .cse4 1)) (< 1 .cse5) (= (mod .cse4 .cse3) 0) (< 255 v_z_7) (< v_z_7 0) (< c_~var_1_35~0 .cse5))))) (or (forall ((v_z_7 Int)) (let ((.cse6 (mod v_z_7 .cse2))) (or (< 0 (+ .cse6 1)) (= (mod .cse6 .cse3) 0) (< 255 v_z_7) (< v_z_7 0) (< c_~var_1_35~0 (div .cse6 .cse3))))) .cse7))) (forall ((v_z_78 Int)) (let ((.cse8 (div (mod v_z_78 .cse2) .cse3))) (or (= .cse8 0) (< c_~var_1_35~0 (+ 2 .cse8)) (< 0 .cse8) (< v_z_78 0) (< 255 v_z_78)))) (or (forall ((v_z_54 Int)) (or (< 255 v_z_54) (< c_~var_1_35~0 (+ 2 (div (mod v_z_54 .cse2) .cse3))) (< v_z_54 0))) .cse7) (forall ((v_z_27 Int)) (let ((.cse10 (mod v_z_27 .cse2))) (let ((.cse9 (div .cse10 .cse3))) (or (< v_z_27 0) (< 255 v_z_27) (< c_~var_1_35~0 (+ .cse9 1)) (not (= (mod .cse10 .cse3) 0)) (< 0 .cse9))))) (or .cse7 (forall ((v_z_10 Int)) (let ((.cse11 (mod v_z_10 .cse2))) (or (< v_z_10 0) (< 255 v_z_10) (< 0 (+ .cse11 1)) (< c_~var_1_35~0 (+ 2 (div .cse11 .cse3))) (= (mod .cse11 .cse3) 0))))) (or (and (forall ((v_z_20 Int)) (let ((.cse12 (mod v_z_20 .cse2))) (or (< 255 v_z_20) (< 0 (div .cse12 .cse3)) (< v_z_20 0) (not (= (mod .cse12 .cse3) 0))))) (or (forall ((v_z_18 Int)) (let ((.cse13 (mod v_z_18 .cse2))) (or (< 0 (div .cse13 .cse3)) (< 255 v_z_18) (< v_z_18 0) (not (= (mod .cse13 .cse3) 0))))) .cse0)) .cse14) (or (forall ((v_z_62 Int)) (let ((.cse16 (mod v_z_62 .cse2))) (let ((.cse15 (div .cse16 .cse3))) (or (< 0 .cse15) (< 255 v_z_62) (< c_~var_1_35~0 (+ .cse15 2)) (not (= (mod .cse16 .cse3) 0)) (< v_z_62 0))))) .cse0) (or (forall ((v_z_10 Int)) (let ((.cse17 (mod v_z_10 .cse2))) (let ((.cse18 (div .cse17 .cse3))) (or (< v_z_10 0) (< 255 v_z_10) (< 0 (+ .cse17 1)) (< c_~var_1_35~0 (+ 2 .cse18)) (= (mod .cse17 .cse3) 0) (< 1 .cse18))))) .cse0) (or (forall ((v_z_15 Int)) (let ((.cse19 (div (mod v_z_15 .cse2) .cse3))) (or (< 255 v_z_15) (< v_z_15 0) (< c_~var_1_35~0 (+ 1 .cse19)) (< 0 .cse19)))) .cse0) (or (and (or (forall ((v_z_73 Int)) (or (< v_z_73 0) (< 255 v_z_73) (< c_~var_1_35~0 (+ (div (mod v_z_73 .cse2) .cse3) 2)))) .cse7) (forall ((v_z_75 Int)) (let ((.cse20 (div (mod v_z_75 .cse2) .cse3))) (or (< 255 v_z_75) (= .cse20 1) (< 1 .cse20) (< c_~var_1_35~0 (+ 2 .cse20)) (< v_z_75 0))))) .cse0) (or (and (or .cse0 (forall ((v_z_55 Int)) (or (< 255 v_z_55) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 (div (mod v_z_55 .cse2) .cse3)))))) .cse21) .cse7) (or .cse14 (and (or (forall ((v_z_88 Int)) (let ((.cse22 (mod v_z_88 .cse2))) (or (not (= (mod .cse22 .cse3) 0)) (< 255 v_z_88) (< v_z_88 0) (< 0 (div .cse22 .cse3))))) .cse0) (or (forall ((v_z_85 Int)) (let ((.cse24 (mod v_z_85 .cse2))) (let ((.cse23 (div .cse24 .cse3))) (or (= .cse23 1) (< 1 .cse23) (not (= (mod .cse24 .cse3) 0)) (< v_z_85 0) (< 255 v_z_85))))) .cse0) (or .cse0 (forall ((v_z_82 Int)) (or (< 0 (div (mod v_z_82 .cse2) .cse3)) (< 255 v_z_82) (< v_z_82 0)))) (forall ((v_z_88 Int)) (let ((.cse25 (mod v_z_88 .cse2))) (let ((.cse26 (div .cse25 .cse3))) (or (not (= (mod .cse25 .cse3) 0)) (= .cse26 0) (< 255 v_z_88) (< v_z_88 0) (< 0 .cse26))))) (or (forall ((v_z_80 Int)) (let ((.cse27 (div (mod v_z_80 .cse2) .cse3))) (or (< v_z_80 0) (< 1 .cse27) (= .cse27 1) (< 255 v_z_80)))) .cse0) (or (forall ((v_z_83 Int)) (or (< (mod v_z_83 .cse2) 0) (< v_z_83 0) (< 255 v_z_83))) .cse0) (forall ((v_z_82 Int)) (let ((.cse28 (div (mod v_z_82 .cse2) .cse3))) (or (= .cse28 0) (< 0 .cse28) (< 255 v_z_82) (< v_z_82 0)))) (forall ((v_z_83 Int)) (let ((.cse29 (mod v_z_83 .cse2))) (let ((.cse30 (div .cse29 .cse3))) (or (< .cse29 0) (< 0 .cse30) (< v_z_83 0) (< 255 v_z_83) (= .cse30 0))))))) (forall ((v_z_55 Int)) (let ((.cse31 (mod v_z_55 .cse2))) (let ((.cse32 (div .cse31 .cse3))) (or (< .cse31 0) (< 255 v_z_55) (= .cse32 0) (< 0 .cse32) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 .cse32)))))) (forall ((v_z_10 Int)) (let ((.cse33 (mod v_z_10 .cse2))) (let ((.cse34 (div .cse33 .cse3))) (or (< v_z_10 0) (< 255 v_z_10) (< 0 (+ .cse33 1)) (< c_~var_1_35~0 (+ 2 .cse34)) (< 0 (+ .cse34 1)) (= (mod .cse33 .cse3) 0))))) (forall ((v_z_15 Int)) (let ((.cse36 (mod v_z_15 .cse2))) (let ((.cse35 (div .cse36 .cse3))) (or (< 255 v_z_15) (< v_z_15 0) (< c_~var_1_35~0 (+ 1 .cse35)) (< 0 .cse35) (< .cse36 0))))) (or .cse0 (forall ((v_z_78 Int)) (let ((.cse37 (div (mod v_z_78 .cse2) .cse3))) (or (< c_~var_1_35~0 (+ 2 .cse37)) (< 0 .cse37) (< v_z_78 0) (< 255 v_z_78))))) (or (forall ((v_z_52 Int)) (or (< v_z_52 0) (< c_~var_1_35~0 (+ 2 (div (mod v_z_52 .cse2) .cse3))) (< 255 v_z_52))) .cse7) (or (and (or .cse14 (forall ((v_z_39 Int)) (or (< v_z_39 0) (< 255 v_z_39) (< (mod v_z_39 .cse2) 0)))) (or .cse7 (forall ((v_z_39 Int)) (let ((.cse38 (div (mod v_z_39 .cse2) .cse3))) (or (< v_z_39 0) (< c_~var_1_35~0 .cse38) (< 255 v_z_39) (= .cse38 c_~var_1_35~0))))) (or .cse14 (forall ((v_z_33 Int)) (let ((.cse39 (div (mod v_z_33 .cse2) .cse3))) (or (= .cse39 1) (< 1 .cse39) (< v_z_33 0) (< 255 v_z_33))))) (or (forall ((v_z_41 Int)) (let ((.cse40 (div (mod v_z_41 .cse2) .cse3))) (or (< v_z_41 0) (= .cse40 c_~var_1_35~0) (< c_~var_1_35~0 .cse40) (< 255 v_z_41)))) .cse7) (or .cse14 (forall ((v_z_45 Int)) (let ((.cse41 (mod v_z_45 .cse2))) (or (< v_z_45 0) (not (= (mod .cse41 .cse3) 0)) (< 255 v_z_45) (< 0 (div .cse41 .cse3)))))) (forall ((v_z_39 Int)) (let ((.cse43 (mod v_z_39 .cse2))) (let ((.cse42 (div .cse43 .cse3))) (or (< v_z_39 0) (< c_~var_1_35~0 .cse42) (< 255 v_z_39) (< .cse43 0) (= .cse42 c_~var_1_35~0))))) (forall ((v_z_45 Int)) (let ((.cse44 (mod v_z_45 .cse2))) (let ((.cse45 (div .cse44 .cse3))) (or (< v_z_45 0) (not (= (mod .cse44 .cse3) 0)) (= .cse45 c_~var_1_35~0) (< c_~var_1_35~0 .cse45) (< 255 v_z_45) (< 0 .cse45))))) (forall ((v_z_33 Int)) (let ((.cse46 (div (mod v_z_33 .cse2) .cse3))) (or (= .cse46 1) (< 1 .cse46) (< v_z_33 0) (< c_~var_1_35~0 .cse46) (< 255 v_z_33) (= .cse46 c_~var_1_35~0)))) (or (forall ((v_z_36 Int)) (let ((.cse47 (div (mod v_z_36 .cse2) .cse3))) (or (< v_z_36 0) (= .cse47 c_~var_1_35~0) (< c_~var_1_35~0 .cse47) (< 255 v_z_36)))) .cse7) (or .cse7 (forall ((v_z_50 Int)) (let ((.cse49 (mod v_z_50 .cse2))) (let ((.cse48 (div .cse49 .cse3))) (or (< c_~var_1_35~0 .cse48) (< v_z_50 0) (< 255 v_z_50) (not (= (mod .cse49 .cse3) 0)) (= .cse48 c_~var_1_35~0))))))) .cse0) (or .cse14 (and (or (forall ((v_z_13 Int)) (let ((.cse50 (mod v_z_13 .cse2))) (or (= (mod .cse50 .cse3) 0) (< 0 (+ .cse50 1)) (< 255 v_z_13) (< v_z_13 0) (< 1 (div .cse50 .cse3))))) .cse0) (forall ((v_z_13 Int)) (let ((.cse51 (mod v_z_13 .cse2))) (or (= (mod .cse51 .cse3) 0) (< 0 (+ .cse51 1)) (< 255 v_z_13) (< 0 (+ (div .cse51 .cse3) 1)) (< v_z_13 0)))))) (or (forall ((v_z_29 Int)) (let ((.cse52 (mod v_z_29 .cse2))) (or (not (= (mod .cse52 .cse3) 0)) (< c_~var_1_35~0 (+ (div .cse52 .cse3) 1)) (< 255 v_z_29) (< v_z_29 0)))) .cse7) (or (forall ((v_z_64 Int)) (let ((.cse54 (mod v_z_64 .cse2))) (let ((.cse53 (div .cse54 .cse3))) (or (< v_z_64 0) (< c_~var_1_35~0 (+ .cse53 2)) (< 255 v_z_64) (not (= (mod .cse54 .cse3) 0)) (< 1 .cse53) (= .cse53 1))))) .cse0) (or (forall ((v_z_25 Int)) (let ((.cse56 (mod v_z_25 .cse2))) (let ((.cse55 (div .cse56 .cse3))) (or (< 0 .cse55) (not (= (mod .cse56 .cse3) 0)) (< c_~var_1_35~0 (+ .cse55 1)) (< 255 v_z_25) (< v_z_25 0))))) .cse0) (or (forall ((v_z_15 Int)) (let ((.cse57 (mod v_z_15 .cse2))) (or (< 255 v_z_15) (< v_z_15 0) (< c_~var_1_35~0 (+ 1 (div .cse57 .cse3))) (< .cse57 0)))) .cse7) (forall ((v_z_62 Int)) (let ((.cse59 (mod v_z_62 .cse2))) (let ((.cse58 (div .cse59 .cse3))) (or (< 0 .cse58) (< 255 v_z_62) (< c_~var_1_35~0 (+ .cse58 2)) (= .cse58 0) (not (= (mod .cse59 .cse3) 0)) (< v_z_62 0))))) (or (forall ((v_z_68 Int)) (let ((.cse60 (mod v_z_68 .cse2))) (or (not (= (mod .cse60 .cse3) 0)) (< 255 v_z_68) (< v_z_68 0) (< c_~var_1_35~0 (+ 2 (div .cse60 .cse3)))))) .cse7) (or .cse14 (and (or (forall ((v_z_15 Int)) (or (< 255 v_z_15) (< v_z_15 0) (< 0 (div (mod v_z_15 .cse2) .cse3)))) .cse0) (forall ((v_z_15 Int)) (let ((.cse61 (mod v_z_15 .cse2))) (or (< 255 v_z_15) (< v_z_15 0) (< 0 (div .cse61 .cse3)) (< .cse61 0)))))) (or .cse21 .cse0))))) is different from true [2023-11-26 10:41:54,199 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse63 (mod c_~var_1_51~0 256)) (.cse62 (mod c_~var_1_52~0 256))) (let ((.cse3 (+ .cse63 (* (- 1) .cse62))) (.cse2 (mod c_~var_1_50~0 256))) (let ((.cse7 (< 1 c_~var_1_35~0)) (.cse14 (< c_~var_1_35~0 2)) (.cse21 (forall ((v_z_55 Int)) (let ((.cse64 (mod v_z_55 .cse2))) (or (< .cse64 0) (< 255 v_z_55) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 (div .cse64 .cse3))))))) (.cse0 (< .cse62 (+ .cse63 1)))) (and (or .cse0 (forall ((v_z_55 Int)) (let ((.cse1 (div (mod v_z_55 .cse2) .cse3))) (or (< 255 v_z_55) (< 0 .cse1) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 .cse1)))))) (or .cse0 (and (forall ((v_z_7 Int)) (let ((.cse4 (mod v_z_7 .cse2))) (let ((.cse5 (div .cse4 .cse3))) (or (< 0 (+ .cse4 1)) (< 1 .cse5) (= (mod .cse4 .cse3) 0) (< 255 v_z_7) (< v_z_7 0) (< c_~var_1_35~0 .cse5))))) (or (forall ((v_z_7 Int)) (let ((.cse6 (mod v_z_7 .cse2))) (or (< 0 (+ .cse6 1)) (= (mod .cse6 .cse3) 0) (< 255 v_z_7) (< v_z_7 0) (< c_~var_1_35~0 (div .cse6 .cse3))))) .cse7))) (forall ((v_z_78 Int)) (let ((.cse8 (div (mod v_z_78 .cse2) .cse3))) (or (= .cse8 0) (< c_~var_1_35~0 (+ 2 .cse8)) (< 0 .cse8) (< v_z_78 0) (< 255 v_z_78)))) (or (forall ((v_z_54 Int)) (or (< 255 v_z_54) (< c_~var_1_35~0 (+ 2 (div (mod v_z_54 .cse2) .cse3))) (< v_z_54 0))) .cse7) (forall ((v_z_27 Int)) (let ((.cse10 (mod v_z_27 .cse2))) (let ((.cse9 (div .cse10 .cse3))) (or (< v_z_27 0) (< 255 v_z_27) (< c_~var_1_35~0 (+ .cse9 1)) (not (= (mod .cse10 .cse3) 0)) (< 0 .cse9))))) (or .cse7 (forall ((v_z_10 Int)) (let ((.cse11 (mod v_z_10 .cse2))) (or (< v_z_10 0) (< 255 v_z_10) (< 0 (+ .cse11 1)) (< c_~var_1_35~0 (+ 2 (div .cse11 .cse3))) (= (mod .cse11 .cse3) 0))))) (or (and (forall ((v_z_20 Int)) (let ((.cse12 (mod v_z_20 .cse2))) (or (< 255 v_z_20) (< 0 (div .cse12 .cse3)) (< v_z_20 0) (not (= (mod .cse12 .cse3) 0))))) (or (forall ((v_z_18 Int)) (let ((.cse13 (mod v_z_18 .cse2))) (or (< 0 (div .cse13 .cse3)) (< 255 v_z_18) (< v_z_18 0) (not (= (mod .cse13 .cse3) 0))))) .cse0)) .cse14) (or (forall ((v_z_62 Int)) (let ((.cse16 (mod v_z_62 .cse2))) (let ((.cse15 (div .cse16 .cse3))) (or (< 0 .cse15) (< 255 v_z_62) (< c_~var_1_35~0 (+ .cse15 2)) (not (= (mod .cse16 .cse3) 0)) (< v_z_62 0))))) .cse0) (or (forall ((v_z_10 Int)) (let ((.cse17 (mod v_z_10 .cse2))) (let ((.cse18 (div .cse17 .cse3))) (or (< v_z_10 0) (< 255 v_z_10) (< 0 (+ .cse17 1)) (< c_~var_1_35~0 (+ 2 .cse18)) (= (mod .cse17 .cse3) 0) (< 1 .cse18))))) .cse0) (or (forall ((v_z_15 Int)) (let ((.cse19 (div (mod v_z_15 .cse2) .cse3))) (or (< 255 v_z_15) (< v_z_15 0) (< c_~var_1_35~0 (+ 1 .cse19)) (< 0 .cse19)))) .cse0) (or (and (or (forall ((v_z_73 Int)) (or (< v_z_73 0) (< 255 v_z_73) (< c_~var_1_35~0 (+ (div (mod v_z_73 .cse2) .cse3) 2)))) .cse7) (forall ((v_z_75 Int)) (let ((.cse20 (div (mod v_z_75 .cse2) .cse3))) (or (< 255 v_z_75) (= .cse20 1) (< 1 .cse20) (< c_~var_1_35~0 (+ 2 .cse20)) (< v_z_75 0))))) .cse0) (or (and (or .cse0 (forall ((v_z_55 Int)) (or (< 255 v_z_55) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 (div (mod v_z_55 .cse2) .cse3)))))) .cse21) .cse7) (or .cse14 (and (or (forall ((v_z_88 Int)) (let ((.cse22 (mod v_z_88 .cse2))) (or (not (= (mod .cse22 .cse3) 0)) (< 255 v_z_88) (< v_z_88 0) (< 0 (div .cse22 .cse3))))) .cse0) (or (forall ((v_z_85 Int)) (let ((.cse24 (mod v_z_85 .cse2))) (let ((.cse23 (div .cse24 .cse3))) (or (= .cse23 1) (< 1 .cse23) (not (= (mod .cse24 .cse3) 0)) (< v_z_85 0) (< 255 v_z_85))))) .cse0) (or .cse0 (forall ((v_z_82 Int)) (or (< 0 (div (mod v_z_82 .cse2) .cse3)) (< 255 v_z_82) (< v_z_82 0)))) (forall ((v_z_88 Int)) (let ((.cse25 (mod v_z_88 .cse2))) (let ((.cse26 (div .cse25 .cse3))) (or (not (= (mod .cse25 .cse3) 0)) (= .cse26 0) (< 255 v_z_88) (< v_z_88 0) (< 0 .cse26))))) (or (forall ((v_z_80 Int)) (let ((.cse27 (div (mod v_z_80 .cse2) .cse3))) (or (< v_z_80 0) (< 1 .cse27) (= .cse27 1) (< 255 v_z_80)))) .cse0) (or (forall ((v_z_83 Int)) (or (< (mod v_z_83 .cse2) 0) (< v_z_83 0) (< 255 v_z_83))) .cse0) (forall ((v_z_82 Int)) (let ((.cse28 (div (mod v_z_82 .cse2) .cse3))) (or (= .cse28 0) (< 0 .cse28) (< 255 v_z_82) (< v_z_82 0)))) (forall ((v_z_83 Int)) (let ((.cse29 (mod v_z_83 .cse2))) (let ((.cse30 (div .cse29 .cse3))) (or (< .cse29 0) (< 0 .cse30) (< v_z_83 0) (< 255 v_z_83) (= .cse30 0))))))) (forall ((v_z_55 Int)) (let ((.cse31 (mod v_z_55 .cse2))) (let ((.cse32 (div .cse31 .cse3))) (or (< .cse31 0) (< 255 v_z_55) (= .cse32 0) (< 0 .cse32) (< v_z_55 0) (< c_~var_1_35~0 (+ 2 .cse32)))))) (forall ((v_z_10 Int)) (let ((.cse33 (mod v_z_10 .cse2))) (let ((.cse34 (div .cse33 .cse3))) (or (< v_z_10 0) (< 255 v_z_10) (< 0 (+ .cse33 1)) (< c_~var_1_35~0 (+ 2 .cse34)) (< 0 (+ .cse34 1)) (= (mod .cse33 .cse3) 0))))) (forall ((v_z_15 Int)) (let ((.cse36 (mod v_z_15 .cse2))) (let ((.cse35 (div .cse36 .cse3))) (or (< 255 v_z_15) (< v_z_15 0) (< c_~var_1_35~0 (+ 1 .cse35)) (< 0 .cse35) (< .cse36 0))))) (or .cse0 (forall ((v_z_78 Int)) (let ((.cse37 (div (mod v_z_78 .cse2) .cse3))) (or (< c_~var_1_35~0 (+ 2 .cse37)) (< 0 .cse37) (< v_z_78 0) (< 255 v_z_78))))) (or (forall ((v_z_52 Int)) (or (< v_z_52 0) (< c_~var_1_35~0 (+ 2 (div (mod v_z_52 .cse2) .cse3))) (< 255 v_z_52))) .cse7) (or (and (or .cse14 (forall ((v_z_39 Int)) (or (< v_z_39 0) (< 255 v_z_39) (< (mod v_z_39 .cse2) 0)))) (or .cse7 (forall ((v_z_39 Int)) (let ((.cse38 (div (mod v_z_39 .cse2) .cse3))) (or (< v_z_39 0) (< c_~var_1_35~0 .cse38) (< 255 v_z_39) (= .cse38 c_~var_1_35~0))))) (or .cse14 (forall ((v_z_33 Int)) (let ((.cse39 (div (mod v_z_33 .cse2) .cse3))) (or (= .cse39 1) (< 1 .cse39) (< v_z_33 0) (< 255 v_z_33))))) (or (forall ((v_z_41 Int)) (let ((.cse40 (div (mod v_z_41 .cse2) .cse3))) (or (< v_z_41 0) (= .cse40 c_~var_1_35~0) (< c_~var_1_35~0 .cse40) (< 255 v_z_41)))) .cse7) (or .cse14 (forall ((v_z_45 Int)) (let ((.cse41 (mod v_z_45 .cse2))) (or (< v_z_45 0) (not (= (mod .cse41 .cse3) 0)) (< 255 v_z_45) (< 0 (div .cse41 .cse3)))))) (forall ((v_z_39 Int)) (let ((.cse43 (mod v_z_39 .cse2))) (let ((.cse42 (div .cse43 .cse3))) (or (< v_z_39 0) (< c_~var_1_35~0 .cse42) (< 255 v_z_39) (< .cse43 0) (= .cse42 c_~var_1_35~0))))) (forall ((v_z_45 Int)) (let ((.cse44 (mod v_z_45 .cse2))) (let ((.cse45 (div .cse44 .cse3))) (or (< v_z_45 0) (not (= (mod .cse44 .cse3) 0)) (= .cse45 c_~var_1_35~0) (< c_~var_1_35~0 .cse45) (< 255 v_z_45) (< 0 .cse45))))) (forall ((v_z_33 Int)) (let ((.cse46 (div (mod v_z_33 .cse2) .cse3))) (or (= .cse46 1) (< 1 .cse46) (< v_z_33 0) (< c_~var_1_35~0 .cse46) (< 255 v_z_33) (= .cse46 c_~var_1_35~0)))) (or (forall ((v_z_36 Int)) (let ((.cse47 (div (mod v_z_36 .cse2) .cse3))) (or (< v_z_36 0) (= .cse47 c_~var_1_35~0) (< c_~var_1_35~0 .cse47) (< 255 v_z_36)))) .cse7) (or .cse7 (forall ((v_z_50 Int)) (let ((.cse49 (mod v_z_50 .cse2))) (let ((.cse48 (div .cse49 .cse3))) (or (< c_~var_1_35~0 .cse48) (< v_z_50 0) (< 255 v_z_50) (not (= (mod .cse49 .cse3) 0)) (= .cse48 c_~var_1_35~0))))))) .cse0) (or .cse14 (and (or (forall ((v_z_13 Int)) (let ((.cse50 (mod v_z_13 .cse2))) (or (= (mod .cse50 .cse3) 0) (< 0 (+ .cse50 1)) (< 255 v_z_13) (< v_z_13 0) (< 1 (div .cse50 .cse3))))) .cse0) (forall ((v_z_13 Int)) (let ((.cse51 (mod v_z_13 .cse2))) (or (= (mod .cse51 .cse3) 0) (< 0 (+ .cse51 1)) (< 255 v_z_13) (< 0 (+ (div .cse51 .cse3) 1)) (< v_z_13 0)))))) (or (forall ((v_z_29 Int)) (let ((.cse52 (mod v_z_29 .cse2))) (or (not (= (mod .cse52 .cse3) 0)) (< c_~var_1_35~0 (+ (div .cse52 .cse3) 1)) (< 255 v_z_29) (< v_z_29 0)))) .cse7) (or (forall ((v_z_64 Int)) (let ((.cse54 (mod v_z_64 .cse2))) (let ((.cse53 (div .cse54 .cse3))) (or (< v_z_64 0) (< c_~var_1_35~0 (+ .cse53 2)) (< 255 v_z_64) (not (= (mod .cse54 .cse3) 0)) (< 1 .cse53) (= .cse53 1))))) .cse0) (or (forall ((v_z_25 Int)) (let ((.cse56 (mod v_z_25 .cse2))) (let ((.cse55 (div .cse56 .cse3))) (or (< 0 .cse55) (not (= (mod .cse56 .cse3) 0)) (< c_~var_1_35~0 (+ .cse55 1)) (< 255 v_z_25) (< v_z_25 0))))) .cse0) (or (forall ((v_z_15 Int)) (let ((.cse57 (mod v_z_15 .cse2))) (or (< 255 v_z_15) (< v_z_15 0) (< c_~var_1_35~0 (+ 1 (div .cse57 .cse3))) (< .cse57 0)))) .cse7) (forall ((v_z_62 Int)) (let ((.cse59 (mod v_z_62 .cse2))) (let ((.cse58 (div .cse59 .cse3))) (or (< 0 .cse58) (< 255 v_z_62) (< c_~var_1_35~0 (+ .cse58 2)) (= .cse58 0) (not (= (mod .cse59 .cse3) 0)) (< v_z_62 0))))) (or (forall ((v_z_68 Int)) (let ((.cse60 (mod v_z_68 .cse2))) (or (not (= (mod .cse60 .cse3) 0)) (< 255 v_z_68) (< v_z_68 0) (< c_~var_1_35~0 (+ 2 (div .cse60 .cse3)))))) .cse7) (or .cse14 (and (or (forall ((v_z_15 Int)) (or (< 255 v_z_15) (< v_z_15 0) (< 0 (div (mod v_z_15 .cse2) .cse3)))) .cse0) (forall ((v_z_15 Int)) (let ((.cse61 (mod v_z_15 .cse2))) (or (< 255 v_z_15) (< v_z_15 0) (< 0 (div .cse61 .cse3)) (< .cse61 0)))))) (or .cse21 .cse0))))) (< c_~var_1_28~0 c_~var_1_34~0)) is different from true