./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_3_4.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_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya --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 605f47223f627b5d6ab9bc7372537ce49861197321d9038cf5b3c12fa8fcd03f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:43:09,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:43:10,020 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:43:10,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:43:10,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:43:10,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:43:10,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:43:10,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:43:10,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:43:10,051 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:43:10,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:43:10,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:43:10,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:43:10,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:43:10,054 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:43:10,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:43:10,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:43:10,056 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:43:10,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:43:10,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:43:10,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:43:10,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:43:10,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:43:10,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:43:10,059 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:43:10,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:43:10,060 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:43:10,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:43:10,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:43:10,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:43:10,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:43:10,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:43:10,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:43:10,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:43:10,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:43:10,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:43:10,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:43:10,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:43:10,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:43:10,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:43:10,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:43:10,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:43:10,064 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_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 605f47223f627b5d6ab9bc7372537ce49861197321d9038cf5b3c12fa8fcd03f [2023-11-29 03:43:10,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:43:10,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:43:10,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:43:10,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:43:10,302 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:43:10,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/gcd_1+newton_3_4.i [2023-11-29 03:43:13,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:43:13,311 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:43:13,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/sv-benchmarks/c/combinations/gcd_1+newton_3_4.i [2023-11-29 03:43:13,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/data/946a2236b/570be1d784174d97b3c46d38ad39505b/FLAG710b79358 [2023-11-29 03:43:13,337 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/data/946a2236b/570be1d784174d97b3c46d38ad39505b [2023-11-29 03:43:13,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:43:13,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:43:13,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:43:13,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:43:13,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:43:13,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f910da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13, skipping insertion in model container [2023-11-29 03:43:13,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,379 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:43:13,541 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_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/sv-benchmarks/c/combinations/gcd_1+newton_3_4.i[1226,1239] [2023-11-29 03:43:13,567 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_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/sv-benchmarks/c/combinations/gcd_1+newton_3_4.i[2828,2841] [2023-11-29 03:43:13,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:43:13,581 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:43:13,596 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_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/sv-benchmarks/c/combinations/gcd_1+newton_3_4.i[1226,1239] [2023-11-29 03:43:13,608 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_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/sv-benchmarks/c/combinations/gcd_1+newton_3_4.i[2828,2841] [2023-11-29 03:43:13,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:43:13,628 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:43:13,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13 WrapperNode [2023-11-29 03:43:13,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:43:13,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:43:13,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:43:13,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:43:13,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,672 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-29 03:43:13,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:43:13,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:43:13,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:43:13,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:43:13,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,702 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 03:43:13,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:43:13,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:43:13,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:43:13,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:43:13,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (1/1) ... [2023-11-29 03:43:13,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:43:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:13,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:43:13,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:43:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:43:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-29 03:43:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-29 03:43:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-29 03:43:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-29 03:43:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:43:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:43:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:43:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:43:13,870 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:43:13,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:43:14,047 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:43:14,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:43:14,078 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:43:14,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:43:14 BoogieIcfgContainer [2023-11-29 03:43:14,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:43:14,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:43:14,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:43:14,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:43:14,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:43:13" (1/3) ... [2023-11-29 03:43:14,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4532a5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:43:14, skipping insertion in model container [2023-11-29 03:43:14,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:43:13" (2/3) ... [2023-11-29 03:43:14,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4532a5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:43:14, skipping insertion in model container [2023-11-29 03:43:14,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:43:14" (3/3) ... [2023-11-29 03:43:14,109 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_4.i [2023-11-29 03:43:14,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:43:14,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 03:43:14,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:43:14,183 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;@2370b7a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:43:14,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:43:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:43:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 03:43:14,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:14,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:14,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:14,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 117379001, now seen corresponding path program 1 times [2023-11-29 03:43:14,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:14,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135542037] [2023-11-29 03:43:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:14,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:14,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368098188] [2023-11-29 03:43:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:14,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:14,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:14,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:14,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:43:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:14,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:43:14,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:14,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:43:14,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:14,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135542037] [2023-11-29 03:43:14,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368098188] [2023-11-29 03:43:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368098188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:43:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418083825] [2023-11-29 03:43:14,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:14,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:43:14,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:43:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:43:14,431 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:14,462 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2023-11-29 03:43:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:43:14,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 03:43:14,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:14,471 INFO L225 Difference]: With dead ends: 59 [2023-11-29 03:43:14,471 INFO L226 Difference]: Without dead ends: 28 [2023-11-29 03:43:14,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:43:14,478 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:14,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:43:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-29 03:43:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-29 03:43:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:43:14,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-11-29 03:43:14,510 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 9 [2023-11-29 03:43:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:14,510 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-11-29 03:43:14,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-11-29 03:43:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 03:43:14,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:14,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:14,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:43:14,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:43:14,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:14,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash 117259837, now seen corresponding path program 1 times [2023-11-29 03:43:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:14,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485612049] [2023-11-29 03:43:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:14,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560626424] [2023-11-29 03:43:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:14,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:14,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:14,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:14,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:43:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:14,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:43:14,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:14,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:43:14,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:14,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485612049] [2023-11-29 03:43:14,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:14,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560626424] [2023-11-29 03:43:14,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560626424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:14,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:14,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:43:14,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328908033] [2023-11-29 03:43:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:14,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:43:14,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:43:14,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:43:14,831 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:14,854 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-11-29 03:43:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:43:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 03:43:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:14,855 INFO L225 Difference]: With dead ends: 34 [2023-11-29 03:43:14,855 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 03:43:14,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:43:14,858 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:14,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:43:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 03:43:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-29 03:43:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:43:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-29 03:43:14,866 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2023-11-29 03:43:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:14,866 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-29 03:43:14,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-29 03:43:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:43:14,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:14,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:14,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:43:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:15,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:15,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash -603037507, now seen corresponding path program 1 times [2023-11-29 03:43:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:15,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185939622] [2023-11-29 03:43:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:15,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:15,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622103905] [2023-11-29 03:43:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:15,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:15,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:15,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:15,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:43:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:15,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:43:15,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:15,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185939622] [2023-11-29 03:43:15,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622103905] [2023-11-29 03:43:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622103905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:15,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-29 03:43:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485105452] [2023-11-29 03:43:15,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:15,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:43:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:43:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:43:15,224 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:15,268 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-29 03:43:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:43:15,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 03:43:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:15,270 INFO L225 Difference]: With dead ends: 34 [2023-11-29 03:43:15,270 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 03:43:15,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:43:15,272 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:15,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:43:15,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 03:43:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 03:43:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:43:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-11-29 03:43:15,279 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2023-11-29 03:43:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:15,280 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-11-29 03:43:15,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-29 03:43:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 03:43:15,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:15,281 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:15,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:43:15,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:15,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:15,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1514676993, now seen corresponding path program 2 times [2023-11-29 03:43:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:15,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876398418] [2023-11-29 03:43:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:15,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:15,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706575784] [2023-11-29 03:43:15,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:43:15,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:15,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:15,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:43:19,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:43:19,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:19,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 03:43:19,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:31,292 WARN L293 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:43:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:48,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:47,694 WARN L293 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:45:02,608 WARN L293 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:45:21,316 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:45:39,298 WARN L293 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:46:10,726 WARN L293 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:46:44,014 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:46:49,436 WARN L293 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:47:29,437 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:47:39,936 WARN L293 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:48:01,866 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:48:18,786 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:48:29,326 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse26 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse25 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1)) (.cse28 (mod (+ .cse26 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256)) (.cse27 (mod (+ .cse26 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (let ((.cse19 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse27) 256) 0))) (.cse21 (= .cse27 0)) (.cse23 (= .cse28 0)) (.cse24 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse9 (< 0 .cse25))) (let ((.cse8 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0))) (.cse0 (< .cse28 128)) (.cse10 (< 127 .cse28)) (.cse5 (< .cse27 128)) (.cse6 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse12 (or .cse23 .cse24 .cse9)) (.cse13 (or .cse19 .cse21 .cse9)) (.cse1 (< 127 .cse27)) (.cse14 (< 0 (+ |c_ULTIMATE.start_gcd_test_~b#1| 1))) (.cse15 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse27)) 256) 0))) (.cse16 (mod .cse26 256))) (and (or (let ((.cse7 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse16)) 256) 0)) (< |c_ULTIMATE.start_gcd_test_~a#1| 0)))) (let ((.cse4 (or .cse14 (and (or .cse15 .cse9) .cse7))) (.cse3 (or (and .cse7 .cse13) .cse14))) (and (or .cse0 (let ((.cse2 (or .cse6 (and .cse7 (or .cse8 .cse9))))) (and (or .cse1 (and .cse2 .cse3)) (or (and .cse4 .cse2) .cse5)))) (or .cse10 (let ((.cse11 (or (and .cse7 .cse12) .cse6))) (and (or .cse5 (and .cse11 .cse4)) (or (and .cse11 .cse3) .cse1))))))) (< .cse16 128)) (or (< 127 .cse16) (let ((.cse20 (= .cse26 0))) (let ((.cse18 (or (and (<= .cse25 0) (not .cse20)) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse16) 256) 0)) (= .cse16 0)))) (let ((.cse22 (or .cse14 (and .cse18 (or .cse20 .cse15 .cse9))))) (and (or (let ((.cse17 (or (and .cse18 (or .cse20 .cse8 .cse9)) .cse6))) (and (or .cse1 (and .cse17 (or .cse14 (and .cse18 (or .cse19 .cse20 .cse21 .cse9))))) (or (and .cse17 .cse22) .cse5))) .cse0) (or .cse10 (and (or (and (or (and (or .cse20 .cse23 .cse24 .cse9) .cse18) .cse6) .cse22) .cse5) (or (and (or .cse6 (and .cse18 .cse12)) (or (and .cse13 .cse18) .cse14)) .cse1))))))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from true [2023-11-29 03:49:38,060 WARN L293 SmtUtils]: Spent 23.07s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:50:08,766 WARN L293 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:50:24,825 WARN L293 SmtUtils]: Spent 7.76s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:51:31,617 WARN L293 SmtUtils]: Spent 26.54s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:51:43,651 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:52:21,187 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:52:54,815 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~y~0#1_11| Int) (v_z_7 Int) (v_y_7 Int)) (let ((.cse0 (mod (mod v_z_7 |v_ULTIMATE.start_main1_~y~0#1_11|) 256)) (.cse1 (* 255 v_z_7)) (.cse2 (* 256 v_y_7))) (or (= .cse0 0) (not (= (mod (mod |v_ULTIMATE.start_main1_~y~0#1_11| .cse0) 256) 0)) (< v_z_7 0) (< (+ .cse1 128 .cse2) 0) (< 0 (+ .cse1 .cse2 1)) (< |v_ULTIMATE.start_main1_~y~0#1_11| 1) (not (= (mod (+ .cse1 .cse2) |v_ULTIMATE.start_main1_~y~0#1_11|) 0)) (< 127 v_z_7)))) is different from false [2023-11-29 03:52:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 03:52:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:52:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876398418] [2023-11-29 03:52:57,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:52:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706575784] [2023-11-29 03:52:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706575784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:52:57,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:52:57,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2023-11-29 03:52:57,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586853734] [2023-11-29 03:52:57,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:52:57,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:52:57,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:52:57,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:52:57,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=94, Unknown=13, NotChecked=20, Total=156 [2023-11-29 03:52:57,869 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:53:00,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 03:53:02,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 03:53:48,242 WARN L293 SmtUtils]: Spent 36.71s on a formula simplification. DAG size of input: 45 DAG size of output: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:53:52,280 WARN L854 $PredicateComparison]: unable to prove that (and (or (not (= (mod |c_ULTIMATE.start_main1_~x~0#1| |c_ULTIMATE.start_main1_~y~0#1|) 0)) (let ((.cse0 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (and (let ((.cse1 (mod (mod .cse0 |c_ULTIMATE.start_main1_~y~0#1|) 256))) (or (< 127 .cse0) (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| .cse1) 256) 0)) (= .cse1 0))) (let ((.cse2 (mod (+ .cse0 (- 256)) |c_ULTIMATE.start_main1_~y~0#1|))) (or (< .cse0 128) (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| (+ (- 256) (mod (+ .cse2 (* |c_ULTIMATE.start_main1_~y~0#1| 255)) 256))) 256) 0)) (= .cse2 0))))) (< 0 (+ |c_ULTIMATE.start_main1_~x~0#1| 1)) (< |c_ULTIMATE.start_main1_~y~0#1| 1)) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (or (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (< 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1)) (let ((.cse3 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (and (let ((.cse4 (mod (mod .cse3 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (< 127 .cse3) (= 0 .cse4) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse4) 256) 0)))) (let ((.cse5 (mod (+ .cse3 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse5 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) 256) 0)) (= .cse5 0) (< .cse3 128)))))) (<= 0 (+ 128 |c_ULTIMATE.start_main1_~x~0#1|)) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (<= 1 |c_ULTIMATE.start_gcd_test_~b#1|)) is different from false [2023-11-29 03:53:56,999 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse12 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1))) (and (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (or (let ((.cse9 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse13 (mod (+ .cse9 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse7 (< .cse13 128)) (.cse8 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse13)) 256) 0))) (.cse1 (< 127 .cse13)) (.cse4 (= .cse13 0)) (.cse5 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse13) 256) 0))) (.cse6 (< 0 .cse12)) (.cse10 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse0 (mod .cse9 256))) (and (or (< 127 .cse0) (let ((.cse2 (or .cse10 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse0) 256) 0)) (= .cse0 0))) (.cse3 (= .cse9 0))) (and (or .cse1 (and .cse2 (or .cse3 .cse4 .cse5 .cse6))) (or .cse7 (and .cse2 (or .cse3 .cse8 .cse6)))))) (or (let ((.cse11 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse0)) 256) 0)) .cse10))) (and (or .cse7 (and .cse11 (or .cse8 .cse6))) (or .cse1 (and .cse11 (or .cse4 .cse5 .cse6))))) (< .cse0 128)))))) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (let ((.cse15 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (or (and (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|) (exists ((v_y_1 Int)) (let ((.cse14 (* 256 v_y_1))) (and (<= 0 (+ .cse14 .cse15 128)) (<= (+ .cse14 .cse15 1) 0) (= (mod (+ .cse14 .cse15) |c_ULTIMATE.start_gcd_test_~b#1|) 0))))) (and (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (exists ((v_y_3 Int)) (let ((.cse16 (* 256 v_y_3))) (and (<= (+ 65281 .cse15 .cse16) 0) (= (mod (+ 65280 .cse15 .cse16) |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= 0 (+ 65408 .cse15 .cse16))))) (<= .cse12 0)))) (<= 1 |c_ULTIMATE.start_gcd_test_~b#1|))) is different from false [2023-11-29 03:54:01,677 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse29 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1))) (let ((.cse25 (<= .cse29 0))) (and (or (let ((.cse26 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse28 (mod (+ .cse26 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256)) (.cse27 (mod (+ .cse26 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (let ((.cse19 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse27) 256) 0))) (.cse21 (= .cse27 0)) (.cse23 (= .cse28 0)) (.cse24 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse9 (< 0 .cse29))) (let ((.cse8 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0))) (.cse0 (< .cse28 128)) (.cse10 (< 127 .cse28)) (.cse5 (< .cse27 128)) (.cse6 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse12 (or .cse23 .cse24 .cse9)) (.cse13 (or .cse19 .cse21 .cse9)) (.cse1 (< 127 .cse27)) (.cse14 (< 0 (+ |c_ULTIMATE.start_gcd_test_~b#1| 1))) (.cse15 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse27)) 256) 0))) (.cse16 (mod .cse26 256))) (and (or (let ((.cse7 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse16)) 256) 0)) (< |c_ULTIMATE.start_gcd_test_~a#1| 0)))) (let ((.cse4 (or .cse14 (and (or .cse15 .cse9) .cse7))) (.cse3 (or (and .cse7 .cse13) .cse14))) (and (or .cse0 (let ((.cse2 (or .cse6 (and .cse7 (or .cse8 .cse9))))) (and (or .cse1 (and .cse2 .cse3)) (or (and .cse4 .cse2) .cse5)))) (or .cse10 (let ((.cse11 (or (and .cse7 .cse12) .cse6))) (and (or .cse5 (and .cse11 .cse4)) (or (and .cse11 .cse3) .cse1))))))) (< .cse16 128)) (or (< 127 .cse16) (let ((.cse20 (= .cse26 0))) (let ((.cse18 (or (and .cse25 (not .cse20)) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse16) 256) 0)) (= .cse16 0)))) (let ((.cse22 (or .cse14 (and .cse18 (or .cse20 .cse15 .cse9))))) (and (or (let ((.cse17 (or (and .cse18 (or .cse20 .cse8 .cse9)) .cse6))) (and (or .cse1 (and .cse17 (or .cse14 (and .cse18 (or .cse19 .cse20 .cse21 .cse9))))) (or (and .cse17 .cse22) .cse5))) .cse0) (or .cse10 (and (or (and (or (and (or .cse20 .cse23 .cse24 .cse9) .cse18) .cse6) .cse22) .cse5) (or (and (or .cse6 (and .cse18 .cse12)) (or (and .cse13 .cse18) .cse14)) .cse1))))))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (let ((.cse31 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (or (and (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|) (exists ((v_y_1 Int)) (let ((.cse30 (* 256 v_y_1))) (and (<= 0 (+ .cse30 .cse31 128)) (<= (+ .cse30 .cse31 1) 0) (= (mod (+ .cse30 .cse31) |c_ULTIMATE.start_gcd_test_~b#1|) 0))))) (and (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (exists ((v_y_3 Int)) (let ((.cse32 (* 256 v_y_3))) (and (<= (+ 65281 .cse31 .cse32) 0) (= (mod (+ 65280 .cse31 .cse32) |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= 0 (+ 65408 .cse31 .cse32))))) .cse25))) (<= 1 |c_ULTIMATE.start_gcd_test_~b#1|)))) is different from false [2023-11-29 03:54:06,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 03:54:50,994 WARN L293 SmtUtils]: Spent 36.15s on a formula simplification. DAG size of input: 58 DAG size of output: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:54:55,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 03:54:57,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 03:55:02,047 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse15 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse7 (mod .cse15 256))) (let ((.cse2 (< 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1))) (.cse6 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) (.cse0 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse17 (= .cse7 0)) (.cse1 (= |c_ULTIMATE.start_gcd_test_~b#1| 0))) (and (or .cse0 .cse1 .cse2 (let ((.cse3 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (and (let ((.cse4 (mod (mod .cse3 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (< 127 .cse3) (= 0 .cse4) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse4) 256) 0)))) (let ((.cse5 (mod (+ .cse3 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse5 .cse6) 256))) 256) 0)) (= .cse5 0) (< .cse3 128)))))) (or (let ((.cse19 (mod (+ .cse15 .cse6) 256))) (let ((.cse13 (< .cse19 128)) (.cse14 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse19)) 256) 0))) (.cse8 (< 127 .cse19)) (.cse11 (= .cse19 0)) (.cse12 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse19) 256) 0))) (.cse16 (< |c_ULTIMATE.start_gcd_test_~a#1| 0))) (and (or (< 127 .cse7) (let ((.cse9 (or .cse16 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse7) 256) 0)) .cse17)) (.cse10 (= .cse15 0))) (and (or .cse8 (and .cse9 (or .cse10 .cse11 .cse12 .cse2))) (or .cse13 (and .cse9 (or .cse10 .cse14 .cse2)))))) (or (let ((.cse18 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse7)) 256) 0)) .cse16))) (and (or .cse13 (and .cse18 (or .cse14 .cse2))) (or .cse8 (and .cse18 (or .cse11 .cse12 .cse2))))) (< .cse7 128))))) .cse0 .cse1) (or (< 127 |c_ULTIMATE.start_gcd_test_~b#1|) (not .cse17) (< (+ |c_ULTIMATE.start_gcd_test_~b#1| 128) 0) .cse1))))) is different from true [2023-11-29 03:55:06,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 03:55:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:06,828 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-29 03:55:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:55:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 03:55:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:06,830 INFO L225 Difference]: With dead ends: 38 [2023-11-29 03:55:06,830 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 03:55:06,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 252.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=20, NotChecked=140, Total=342 [2023-11-29 03:55:06,832 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:06,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 216 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 2 Unknown, 84 Unchecked, 17.4s Time] [2023-11-29 03:55:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 03:55:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 03:55:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:55:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-29 03:55:06,838 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2023-11-29 03:55:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:06,838 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-29 03:55:06,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-29 03:55:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 03:55:06,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:06,840 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:06,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:55:07,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:07,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:55:07,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1970943677, now seen corresponding path program 1 times [2023-11-29 03:55:07,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:07,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074415597] [2023-11-29 03:55:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:07,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:07,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:07,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895835469] [2023-11-29 03:55:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:07,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:07,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:07,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:07,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b72c2d9-3dc6-4684-a4ec-a69b4a5f58bf/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:55:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:07,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:55:07,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:07,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:28,814 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:56:08,555 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:56:20,941 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 03:58:23,149 WARN L293 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)