./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/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_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/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_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/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 6cf2561dad1c8b51aa2ba3c0e99715767de125185ed9dd0f295e3fa44621c8c9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:44:12,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:44:13,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:44:13,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:44:13,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:44:13,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:44:13,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:44:13,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:44:13,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:44:13,043 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:44:13,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:44:13,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:44:13,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:44:13,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:44:13,046 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:44:13,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:44:13,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:44:13,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:44:13,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:44:13,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:44:13,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:44:13,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:44:13,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:44:13,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:44:13,051 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:44:13,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:44:13,052 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:44:13,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:44:13,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:44:13,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:44:13,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:44:13,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:44:13,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:44:13,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:44:13,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:44:13,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:44:13,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:44:13,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:44:13,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:44:13,055 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:44:13,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:44:13,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:44:13,056 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_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cf2561dad1c8b51aa2ba3c0e99715767de125185ed9dd0f295e3fa44621c8c9 [2023-11-28 20:44:13,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:44:13,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:44:13,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:44:13,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:44:13,308 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:44:13,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-6.i [2023-11-28 20:44:16,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:44:16,249 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:44:16,250 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-6.i [2023-11-28 20:44:16,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/data/ce767aac9/e7e9e18888cd4c66927b9d3e845e9d3d/FLAGcd5297597 [2023-11-28 20:44:16,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/data/ce767aac9/e7e9e18888cd4c66927b9d3e845e9d3d [2023-11-28 20:44:16,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:44:16,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:44:16,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:44:16,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:44:16,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:44:16,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be76626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16, skipping insertion in model container [2023-11-28 20:44:16,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:44:16,463 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_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-6.i[914,927] [2023-11-28 20:44:16,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:44:16,517 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:44:16,529 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_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-6.i[914,927] [2023-11-28 20:44:16,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:44:16,572 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:44:16,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16 WrapperNode [2023-11-28 20:44:16,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:44:16,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:44:16,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:44:16,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:44:16,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,620 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2023-11-28 20:44:16,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:44:16,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:44:16,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:44:16,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:44:16,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,650 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]. [2023-11-28 20:44:16,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:44:16,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:44:16,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:44:16,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:44:16,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (1/1) ... [2023-11-28 20:44:16,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:44:16,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:16,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:44:16,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:44:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:44:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 20:44:16,730 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 20:44:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:44:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:44:16,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:44:16,808 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:44:16,810 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:44:17,055 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:44:17,102 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:44:17,102 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 20:44:17,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:17 BoogieIcfgContainer [2023-11-28 20:44:17,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:44:17,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:44:17,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:44:17,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:44:17,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:44:16" (1/3) ... [2023-11-28 20:44:17,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b7213c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:44:17, skipping insertion in model container [2023-11-28 20:44:17,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:16" (2/3) ... [2023-11-28 20:44:17,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b7213c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:44:17, skipping insertion in model container [2023-11-28 20:44:17,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:17" (3/3) ... [2023-11-28 20:44:17,112 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-6.i [2023-11-28 20:44:17,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:44:17,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 20:44:17,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:44:17,190 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;@1ab31568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:44:17,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 20:44:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-28 20:44:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 20:44:17,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:17,209 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:17,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:17,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1087530442, now seen corresponding path program 1 times [2023-11-28 20:44:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:17,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234056342] [2023-11-28 20:44:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:17,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234056342] [2023-11-28 20:44:17,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 20:44:17,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309178509] [2023-11-28 20:44:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:17,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:17,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:44:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 20:44:17,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-28 20:44:17,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:44:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309178509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:17,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:44:17,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570609252] [2023-11-28 20:44:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 20:44:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 20:44:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:44:17,672 INFO L87 Difference]: Start difference. First operand has 48 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-28 20:44:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:44:17,743 INFO L93 Difference]: Finished difference Result 95 states and 168 transitions. [2023-11-28 20:44:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 20:44:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 114 [2023-11-28 20:44:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:44:17,751 INFO L225 Difference]: With dead ends: 95 [2023-11-28 20:44:17,751 INFO L226 Difference]: Without dead ends: 46 [2023-11-28 20:44:17,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:44:17,757 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:44:17,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:44:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-28 20:44:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-28 20:44:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-28 20:44:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2023-11-28 20:44:17,800 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 70 transitions. Word has length 114 [2023-11-28 20:44:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:44:17,800 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 70 transitions. [2023-11-28 20:44:17,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-28 20:44:17,801 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 70 transitions. [2023-11-28 20:44:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 20:44:17,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:17,805 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:17,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:44:18,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 20:44:18,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:18,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1520950900, now seen corresponding path program 1 times [2023-11-28 20:44:18,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:18,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967123493] [2023-11-28 20:44:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:18,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:44:18,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832836806] [2023-11-28 20:44:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:18,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:18,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:18,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:44:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:18,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 20:44:18,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:47:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-11-28 20:47:34,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:51:45,683 WARN L293 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:51:57,176 WARN L293 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:52:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-28 20:52:02,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:52:02,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967123493] [2023-11-28 20:52:02,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:52:02,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832836806] [2023-11-28 20:52:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832836806] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:52:02,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:52:02,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-11-28 20:52:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891165681] [2023-11-28 20:52:02,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:52:02,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:52:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:52:02,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:52:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:52:02,424 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-28 20:52:05,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:10,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:14,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:28,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:32,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:34,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:38,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:42,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:46,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:52:50,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:05,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:09,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:13,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:17,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:21,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:25,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:30,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:34,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:53:38,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:06,698 WARN L293 SmtUtils]: Spent 9.37s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:54:08,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:11,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:15,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:18,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:22,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:26,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:29,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:33,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:37,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:41,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:45,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:49,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:53,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:54:57,730 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse21 (mod c_~var_1_6~0 65536))) (let ((.cse19 (mod c_~var_1_12~0 256)) (.cse22 (= .cse21 c_~var_1_18~0)) (.cse20 (* .cse21 .cse21)) (.cse24 (mod c_~var_1_4~0 65536)) (.cse26 (mod c_~last_1_var_1_1~0 4294967296)) (.cse23 (mod c_~last_1_var_1_6~0 65536)) (.cse25 (mod c_~last_1_var_1_18~0 4294967296))) (let ((.cse1 (+ .cse25 1)) (.cse2 (mod |c_ULTIMATE.start_step_~stepLocal_0~0#1| 4294967296)) (.cse14 (< .cse26 (+ .cse23 1))) (.cse13 (<= (mod (div .cse26 .cse24) 4294967296) .cse25)) (.cse5 (< .cse23 .cse26)) (.cse6 (<= (mod (div .cse23 .cse24) 4294967296) .cse25)) (.cse7 (or .cse22 (forall ((~var_1_7~0 Int)) (< (mod (+ .cse20 (* .cse21 ~var_1_7~0)) 4294967296) 129)))) (.cse17 (= (mod c_~var_1_15~0 256) 0)) (.cse9 (or .cse22 (forall ((~var_1_7~0 Int)) (< (mod (+ .cse20 (* .cse21 ~var_1_7~0)) 4294967296) 1000000001)))) (.cse10 (= .cse21 (mod c_~var_1_11~0 65536))) (.cse11 (not (= (mod c_~var_1_13~0 256) 0))) (.cse16 (= (mod c_~var_1_16~0 256) 0)) (.cse12 (or (forall ((~var_1_7~0 Int)) (<= (mod (+ .cse20 (* .cse21 ~var_1_7~0)) 4294967296) 0)) .cse22)) (.cse15 (= (mod c_~var_1_14~0 256) 0)) (.cse18 (= .cse19 1))) (and (forall ((v_z_79 Int) (v_z_91 Int) (v_z_87 Int)) (let ((.cse0 (mod (div v_z_79 v_z_87) 4294967296))) (or (< v_z_79 v_z_91) (< .cse0 .cse1) (< .cse2 (mod (div v_z_91 v_z_87) 4294967296)) (< 65535 v_z_79) (< v_z_87 0) (< v_z_91 0) (< .cse2 .cse0)))) (forall ((v_z_92 Int) (v_z_97 Int)) (let ((.cse3 (mod (div v_z_92 v_z_97) 4294967296))) (or (< v_z_97 0) (< 65535 v_z_97) (< v_z_92 1) (< .cse3 .cse1) (< 4294967295 v_z_92) (< .cse2 .cse3)))) (forall ((v_z_100 Int) (v_z_105 Int)) (let ((.cse4 (mod (div v_z_100 v_z_105) 4294967296))) (or (< v_z_105 0) (< 65535 v_z_100) (< v_z_100 0) (< .cse4 .cse1) (< .cse2 .cse4)))) (or (let ((.cse8 (or (not .cse15) (not .cse16) (not .cse17)))) (and (or .cse5 (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12)) (or (and .cse7 .cse8 .cse13 .cse9 .cse10 .cse11 .cse12) .cse14))) (not .cse18)) (or (and (or .cse14 (and .cse7 .cse17 .cse13 .cse9 .cse10 .cse11 .cse16 .cse12 .cse15)) (= .cse19 0) (or .cse5 (and .cse6 .cse7 .cse17 .cse9 .cse10 .cse11 .cse16 .cse12 .cse15))) .cse18))))) is different from false [2023-11-28 20:54:58,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:02,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:07,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:11,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:15,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:19,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:23,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:27,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:31,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:35,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:39,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:43,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:47,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:51,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:52,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:55:56,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:00,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:10,708 WARN L293 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:56:19,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:23,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:27,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:31,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:35,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:39,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:43,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:45,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:56:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:56:47,107 INFO L93 Difference]: Finished difference Result 75 states and 106 transitions. [2023-11-28 20:56:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:56:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 114 [2023-11-28 20:56:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:56:47,111 INFO L225 Difference]: With dead ends: 75 [2023-11-28 20:56:47,111 INFO L226 Difference]: Without dead ends: 73 [2023-11-28 20:56:47,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 86.3s TimeCoverageRelationStatistics Valid=102, Invalid=447, Unknown=7, NotChecked=44, Total=600 [2023-11-28 20:56:47,113 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 52 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 216.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:56:47,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 379 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 42 Unknown, 6 Unchecked, 216.9s Time] [2023-11-28 20:56:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-28 20:56:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2023-11-28 20:56:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-28 20:56:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 80 transitions. [2023-11-28 20:56:47,126 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 80 transitions. Word has length 114 [2023-11-28 20:56:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:56:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 80 transitions. [2023-11-28 20:56:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-28 20:56:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 80 transitions. [2023-11-28 20:56:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 20:56:47,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:56:47,131 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:56:47,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:56:47,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:56:47,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:56:47,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:56:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1520891318, now seen corresponding path program 1 times [2023-11-28 20:56:47,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:56:47,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050400380] [2023-11-28 20:56:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:56:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:56:47,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:56:47,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066243654] [2023-11-28 20:56:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:56:47,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:56:47,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:56:47,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:56:47,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6f5b68-7f49-427f-bfc8-6502c1a08eaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:56:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:56:47,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 20:56:47,465 INFO L285 TraceCheckSpWp]: Computing forward predicates...