./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu --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 93e3c3bb67a4613ef517536c02b2baa8489f9a353eac0e6ca61ce50a9ad293d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:20,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:20,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:20,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:20,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:20,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:20,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:20,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:20,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:20,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:20,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:20,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:20,390 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:20,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:20,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:20,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:20,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:20,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:20,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:20,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:20,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:20,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:20,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:20,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:20,400 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:20,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:20,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:20,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:20,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:20,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:20,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:20,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:20,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:20,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:20,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:20,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:20,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:20,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:20,408 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:20,408 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_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93e3c3bb67a4613ef517536c02b2baa8489f9a353eac0e6ca61ce50a9ad293d5 [2023-11-19 07:40:20,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:20,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:20,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:20,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:20,794 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:20,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i [2023-11-19 07:40:23,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:24,224 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:24,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i [2023-11-19 07:40:24,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data/629559737/f163e1ac66ba4a219014d5b17ba089d6/FLAGa56239fc2 [2023-11-19 07:40:24,250 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data/629559737/f163e1ac66ba4a219014d5b17ba089d6 [2023-11-19 07:40:24,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:24,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:24,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:24,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:24,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:24,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7304e5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24, skipping insertion in model container [2023-11-19 07:40:24,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:24,535 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_d828d563-a4aa-4dd3-8019-601f109d5528/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i[915,928] [2023-11-19 07:40:24,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:24,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:24,625 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_d828d563-a4aa-4dd3-8019-601f109d5528/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i[915,928] [2023-11-19 07:40:24,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:24,677 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:24,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24 WrapperNode [2023-11-19 07:40:24,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:24,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:24,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:24,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:24,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,758 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 128 [2023-11-19 07:40:24,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:24,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:24,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:24,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:24,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:24,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:24,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:24,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:24,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (1/1) ... [2023-11-19 07:40:24,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:24,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:24,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:40:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:40:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:25,044 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:25,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:25,466 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:25,475 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:25,476 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:40:25,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:25 BoogieIcfgContainer [2023-11-19 07:40:25,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:25,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:25,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:25,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:25,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:24" (1/3) ... [2023-11-19 07:40:25,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a55a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:25, skipping insertion in model container [2023-11-19 07:40:25,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:24" (2/3) ... [2023-11-19 07:40:25,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a55a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:25, skipping insertion in model container [2023-11-19 07:40:25,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:25" (3/3) ... [2023-11-19 07:40:25,500 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-42.i [2023-11-19 07:40:25,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:25,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:25,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:25,584 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;@4e2a5cda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:25,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:40:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:40:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:40:25,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:25,602 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:25,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:25,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2007489892, now seen corresponding path program 1 times [2023-11-19 07:40:25,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:25,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967295204] [2023-11-19 07:40:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967295204] [2023-11-19 07:40:25,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:40:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81912227] [2023-11-19 07:40:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:25,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:25,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:25,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:40:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:26,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:40:26,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-19 07:40:26,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81912227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:26,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079100976] [2023-11-19 07:40:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:26,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:26,254 INFO L87 Difference]: Start difference. First operand has 54 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 07:40:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:26,284 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2023-11-19 07:40:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2023-11-19 07:40:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:26,295 INFO L225 Difference]: With dead ends: 105 [2023-11-19 07:40:26,295 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 07:40:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:26,302 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:26,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 07:40:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-19 07:40:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:40:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-11-19 07:40:26,347 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 87 [2023-11-19 07:40:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:26,347 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-11-19 07:40:26,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 07:40:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-11-19 07:40:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:40:26,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:26,353 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:26,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:40:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:40:26,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:26,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash 910056408, now seen corresponding path program 1 times [2023-11-19 07:40:26,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:26,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483232855] [2023-11-19 07:40:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:26,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:26,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369420684] [2023-11-19 07:40:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:26,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:26,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:26,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:26,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:40:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:26,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:40:26,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:26,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:26,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483232855] [2023-11-19 07:40:26,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369420684] [2023-11-19 07:40:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369420684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291600643] [2023-11-19 07:40:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:26,927 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:27,025 INFO L93 Difference]: Finished difference Result 97 states and 141 transitions. [2023-11-19 07:40:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 87 [2023-11-19 07:40:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:27,028 INFO L225 Difference]: With dead ends: 97 [2023-11-19 07:40:27,028 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 07:40:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:27,031 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 77 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:27,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 87 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 07:40:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-19 07:40:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:40:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 71 transitions. [2023-11-19 07:40:27,044 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 71 transitions. Word has length 87 [2023-11-19 07:40:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:27,046 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 71 transitions. [2023-11-19 07:40:27,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 71 transitions. [2023-11-19 07:40:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:40:27,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:27,049 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:27,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:27,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:27,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:27,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1590114778, now seen corresponding path program 1 times [2023-11-19 07:40:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:27,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413704223] [2023-11-19 07:40:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:27,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910189310] [2023-11-19 07:40:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:27,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:27,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:27,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:27,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:40:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:27,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:40:27,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:27,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413704223] [2023-11-19 07:40:27,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910189310] [2023-11-19 07:40:27,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910189310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:27,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:27,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:27,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111052322] [2023-11-19 07:40:27,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:27,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:27,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:27,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:27,943 INFO L87 Difference]: Start difference. First operand 50 states and 71 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:28,098 INFO L93 Difference]: Finished difference Result 145 states and 208 transitions. [2023-11-19 07:40:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 87 [2023-11-19 07:40:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:28,104 INFO L225 Difference]: With dead ends: 145 [2023-11-19 07:40:28,104 INFO L226 Difference]: Without dead ends: 98 [2023-11-19 07:40:28,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:28,111 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 90 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:28,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 213 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-19 07:40:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2023-11-19 07:40:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:40:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2023-11-19 07:40:28,155 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 87 [2023-11-19 07:40:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:28,155 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2023-11-19 07:40:28,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2023-11-19 07:40:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:28,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:28,158 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:28,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:28,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:28,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1399201626, now seen corresponding path program 1 times [2023-11-19 07:40:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:28,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506033131] [2023-11-19 07:40:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:28,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:28,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848514133] [2023-11-19 07:40:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:28,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:28,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:28,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:40:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:40:28,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:28,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506033131] [2023-11-19 07:40:28,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848514133] [2023-11-19 07:40:28,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848514133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932028517] [2023-11-19 07:40:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:28,944 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:29,151 INFO L93 Difference]: Finished difference Result 189 states and 269 transitions. [2023-11-19 07:40:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2023-11-19 07:40:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:29,160 INFO L225 Difference]: With dead ends: 189 [2023-11-19 07:40:29,161 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 07:40:29,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:29,168 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 97 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:29,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 249 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 07:40:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2023-11-19 07:40:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 81 states have internal predecessors, (102), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:40:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2023-11-19 07:40:29,230 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 88 [2023-11-19 07:40:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:29,233 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 174 transitions. [2023-11-19 07:40:29,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 174 transitions. [2023-11-19 07:40:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:29,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:29,241 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:29,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:29,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:29,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:29,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1615901992, now seen corresponding path program 1 times [2023-11-19 07:40:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545355512] [2023-11-19 07:40:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:29,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087210132] [2023-11-19 07:40:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:29,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:29,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:29,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:40:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:29,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:40:29,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-19 07:40:29,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-19 07:40:30,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545355512] [2023-11-19 07:40:30,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087210132] [2023-11-19 07:40:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087210132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:30,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:30,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-19 07:40:30,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772627357] [2023-11-19 07:40:30,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:30,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:40:30,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:30,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:40:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:40:30,192 INFO L87 Difference]: Start difference. First operand 121 states and 174 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:40:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:31,305 INFO L93 Difference]: Finished difference Result 388 states and 517 transitions. [2023-11-19 07:40:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 07:40:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2023-11-19 07:40:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:31,312 INFO L225 Difference]: With dead ends: 388 [2023-11-19 07:40:31,312 INFO L226 Difference]: Without dead ends: 341 [2023-11-19 07:40:31,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2023-11-19 07:40:31,316 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 206 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:31,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 409 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:40:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-19 07:40:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 207. [2023-11-19 07:40:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 146 states have internal predecessors, (180), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:40:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 276 transitions. [2023-11-19 07:40:31,388 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 276 transitions. Word has length 88 [2023-11-19 07:40:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:31,389 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 276 transitions. [2023-11-19 07:40:31,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:40:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 276 transitions. [2023-11-19 07:40:31,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:31,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:31,391 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:31,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:31,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:31,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:31,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash 604784742, now seen corresponding path program 1 times [2023-11-19 07:40:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987646194] [2023-11-19 07:40:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:31,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:31,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478489643] [2023-11-19 07:40:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:31,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:40:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:31,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:40:31,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 07:40:32,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987646194] [2023-11-19 07:40:32,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478489643] [2023-11-19 07:40:32,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478489643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:32,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:40:32,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:40:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720625228] [2023-11-19 07:40:32,434 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:32,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:40:32,436 INFO L87 Difference]: Start difference. First operand 207 states and 276 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 07:40:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:33,119 INFO L93 Difference]: Finished difference Result 610 states and 798 transitions. [2023-11-19 07:40:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:40:33,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2023-11-19 07:40:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:33,125 INFO L225 Difference]: With dead ends: 610 [2023-11-19 07:40:33,125 INFO L226 Difference]: Without dead ends: 446 [2023-11-19 07:40:33,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:40:33,127 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 94 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 33 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:33,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 370 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 158 Invalid, 2 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:40:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-11-19 07:40:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 385. [2023-11-19 07:40:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 275 states have (on average 1.2181818181818183) internal successors, (335), 275 states have internal predecessors, (335), 84 states have call successors, (84), 25 states have call predecessors, (84), 25 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-19 07:40:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 503 transitions. [2023-11-19 07:40:33,225 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 503 transitions. Word has length 88 [2023-11-19 07:40:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:33,226 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 503 transitions. [2023-11-19 07:40:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 07:40:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 503 transitions. [2023-11-19 07:40:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:40:33,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:33,229 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:33,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:33,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:33,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -115829519, now seen corresponding path program 1 times [2023-11-19 07:40:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858583813] [2023-11-19 07:40:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:33,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091660688] [2023-11-19 07:40:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:33,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:33,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:40:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:33,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:33,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:33,809 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:40:33,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:40:33,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:34,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:34,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,042 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:40:34,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:40:34 BoogieIcfgContainer [2023-11-19 07:40:34,177 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:40:34,178 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:40:34,178 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:40:34,178 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:40:34,179 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:25" (3/4) ... [2023-11-19 07:40:34,181 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:40:34,182 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:40:34,183 INFO L158 Benchmark]: Toolchain (without parser) took 9928.28ms. Allocated memory was 125.8MB in the beginning and 209.7MB in the end (delta: 83.9MB). Free memory was 64.1MB in the beginning and 129.6MB in the end (delta: -65.5MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2023-11-19 07:40:34,184 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:34,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.84ms. Allocated memory was 125.8MB in the beginning and 174.1MB in the end (delta: 48.2MB). Free memory was 63.8MB in the beginning and 134.6MB in the end (delta: -70.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:34,185 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.71ms. Allocated memory is still 174.1MB. Free memory was 134.6MB in the beginning and 131.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:34,185 INFO L158 Benchmark]: Boogie Preprocessor took 46.65ms. Allocated memory is still 174.1MB. Free memory was 131.4MB in the beginning and 129.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:34,186 INFO L158 Benchmark]: RCFGBuilder took 664.94ms. Allocated memory is still 174.1MB. Free memory was 129.4MB in the beginning and 109.4MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:40:34,187 INFO L158 Benchmark]: TraceAbstraction took 8688.02ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 108.9MB in the beginning and 129.6MB in the end (delta: -20.6MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-11-19 07:40:34,187 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 209.7MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:34,190 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.84ms. Allocated memory was 125.8MB in the beginning and 174.1MB in the end (delta: 48.2MB). Free memory was 63.8MB in the beginning and 134.6MB in the end (delta: -70.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.71ms. Allocated memory is still 174.1MB. Free memory was 134.6MB in the beginning and 131.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.65ms. Allocated memory is still 174.1MB. Free memory was 131.4MB in the beginning and 129.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 664.94ms. Allocated memory is still 174.1MB. Free memory was 129.4MB in the beginning and 109.4MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8688.02ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 108.9MB in the beginning and 129.6MB in the end (delta: -20.6MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 209.7MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 123, overapproximation of someUnaryDOUBLEoperation at line 30. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 16; [L23] signed char var_1_5 = -8; [L24] unsigned char var_1_6 = 10; [L25] unsigned char var_1_7 = 128; [L26] unsigned char var_1_8 = 1; [L27] unsigned char var_1_11 = 0; [L28] unsigned char var_1_12 = 0; [L29] signed short int var_1_13 = 200; [L30] float var_1_14 = -0.8; [L31] float var_1_15 = 127.25; [L32] float var_1_16 = 3.5; [L33] unsigned short int var_1_17 = 16; [L34] unsigned char var_1_19 = 1; [L35] unsigned char var_1_20 = 0; [L36] signed short int last_1_var_1_1 = 16; [L37] unsigned char last_1_var_1_6 = 10; [L38] unsigned char last_1_var_1_8 = 1; [L39] signed short int last_1_var_1_13 = 200; VAL [isInitial=0, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-8, var_1_6=10, var_1_7=128, var_1_8=1] [L127] isInitial = 1 [L128] FCALL initially() [L129] int k_loop; [L130] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-8, var_1_6=10, var_1_7=128, var_1_8=1] [L130] COND TRUE k_loop < 1 [L131] CALL updateLastVariables() [L117] last_1_var_1_1 = var_1_1 [L118] last_1_var_1_6 = var_1_6 [L119] last_1_var_1_8 = var_1_8 [L120] last_1_var_1_13 = var_1_13 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-8, var_1_6=10, var_1_7=128, var_1_8=1] [L131] RET updateLastVariables() [L132] CALL updateVariables() [L96] var_1_5 = __VERIFIER_nondet_char() [L97] CALL assume_abort_if_not(var_1_5 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L97] RET assume_abort_if_not(var_1_5 >= -127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L98] CALL assume_abort_if_not(var_1_5 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L98] RET assume_abort_if_not(var_1_5 <= 127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L99] var_1_7 = __VERIFIER_nondet_uchar() [L100] CALL assume_abort_if_not(var_1_7 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L100] RET assume_abort_if_not(var_1_7 >= 127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L101] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L101] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L102] var_1_11 = __VERIFIER_nondet_uchar() [L103] CALL assume_abort_if_not(var_1_11 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L103] RET assume_abort_if_not(var_1_11 >= 1) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L104] CALL assume_abort_if_not(var_1_11 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L104] RET assume_abort_if_not(var_1_11 <= 1) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L105] var_1_12 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L106] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L107] CALL assume_abort_if_not(var_1_12 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L107] RET assume_abort_if_not(var_1_12 <= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L108] var_1_15 = __VERIFIER_nondet_float() [L109] CALL assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L109] RET assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L110] var_1_16 = __VERIFIER_nondet_float() [L111] CALL assume_abort_if_not((var_1_16 >= -461168.6018427382800e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 4611686.018427382800e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L111] RET assume_abort_if_not((var_1_16 >= -461168.6018427382800e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 4611686.018427382800e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L112] var_1_20 = __VERIFIER_nondet_uchar() [L113] CALL assume_abort_if_not(var_1_20 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L113] RET assume_abort_if_not(var_1_20 >= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L114] CALL assume_abort_if_not(var_1_20 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L114] RET assume_abort_if_not(var_1_20 <= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L132] RET updateVariables() [L133] CALL step() [L43] signed long int stepLocal_6 = last_1_var_1_1; [L44] unsigned char stepLocal_5 = ((((last_1_var_1_1) < (8)) ? (last_1_var_1_1) : (8))) <= var_1_5; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L45] COND TRUE stepLocal_5 || last_1_var_1_8 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L46] COND FALSE !(stepLocal_6 <= last_1_var_1_6) [L49] var_1_14 = var_1_16 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L54] COND FALSE !(var_1_14 <= var_1_15) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L57] COND TRUE var_1_5 >= -2 [L58] var_1_6 = (var_1_7 - 100) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L60] unsigned char stepLocal_4 = var_1_6; [L61] signed long int stepLocal_3 = var_1_6 / var_1_7; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L62] COND TRUE last_1_var_1_13 >= stepLocal_3 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L63] COND TRUE stepLocal_4 != ((((((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) > (var_1_5)) ? (((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) : (var_1_5))) [L64] var_1_13 = var_1_7 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L71] unsigned char stepLocal_7 = var_1_6; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L72] COND FALSE !(stepLocal_7 > var_1_6) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L75] unsigned char stepLocal_0 = var_1_6; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L76] COND TRUE \read(var_1_19) [L77] var_1_1 = ((((var_1_6) > (var_1_6)) ? (var_1_6) : (var_1_6))) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L83] unsigned char stepLocal_2 = var_1_19 && var_1_19; [L84] unsigned char stepLocal_1 = var_1_7; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, stepLocal_1=254, stepLocal_2=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L85] COND FALSE !((49.5f <= var_1_14) && stepLocal_2) [L92] var_1_8 = var_1_12 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, stepLocal_1=254, stepLocal_2=1, stepLocal_3=0, stepLocal_4=154, stepLocal_5=1, stepLocal_6=16, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] [L133] RET step() [L134] CALL, EXPR property() [L123-L124] return ((((((var_1_19 ? (var_1_1 == ((signed short int) ((((var_1_6) > (var_1_6)) ? (var_1_6) : (var_1_6))))) : ((((((var_1_5) < 0 ) ? -(var_1_5) : (var_1_5))) >= var_1_6) ? (var_1_1 == ((signed short int) var_1_5)) : 1)) && ((var_1_5 >= -2) ? (var_1_6 == ((unsigned char) (var_1_7 - 100))) : 1)) && (((49.5f <= var_1_14) && (var_1_19 && var_1_19)) ? ((var_1_13 < var_1_7) ? (var_1_8 == ((unsigned char) (var_1_19 || var_1_11))) : (var_1_8 == ((unsigned char) var_1_11))) : (var_1_8 == ((unsigned char) var_1_12)))) && ((last_1_var_1_13 >= (var_1_6 / var_1_7)) ? ((var_1_6 != ((((((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) > (var_1_5)) ? (((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) : (var_1_5)))) ? (var_1_13 == ((signed short int) var_1_7)) : (var_1_13 == ((signed short int) last_1_var_1_13))) : (var_1_13 == ((signed short int) var_1_6)))) && (((((((last_1_var_1_1) < (8)) ? (last_1_var_1_1) : (8))) <= var_1_5) || last_1_var_1_8) ? ((last_1_var_1_1 <= last_1_var_1_6) ? (var_1_14 == ((float) (var_1_15 + var_1_16))) : (var_1_14 == ((float) var_1_16))) : (var_1_14 == ((float) var_1_16)))) && ((var_1_6 > var_1_6) ? (var_1_17 == ((unsigned short int) ((((25) > ((var_1_13 + var_1_6))) ? (25) : ((var_1_13 + var_1_6)))))) : 1)) && ((var_1_14 <= var_1_15) ? (var_1_19 == ((unsigned char) (var_1_12 || var_1_20))) : 1) ; VAL [\result=0, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] [L134] RET, EXPR property() [L134] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=3, var_1_15=2, var_1_16=3, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 7, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 572 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 564 mSDsluCounter, 1404 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 961 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 659 IncrementalHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 443 mSDtfsCounter, 659 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 672 GetRequests, 598 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=6, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 238 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 701 NumberOfCodeBlocks, 701 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 606 ConstructedInterpolants, 1 QuantifiedInterpolants, 2094 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1452 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1800/1848 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:40:34,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu --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 93e3c3bb67a4613ef517536c02b2baa8489f9a353eac0e6ca61ce50a9ad293d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:37,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:37,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:40:37,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:37,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:37,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:37,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:37,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:37,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:37,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:37,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:37,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:37,303 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:37,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:37,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:37,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:37,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:37,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:37,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:37,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:37,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:37,308 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:40:37,308 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:40:37,309 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:40:37,309 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:37,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:37,310 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:37,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:37,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:37,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:37,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:37,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:37,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:37,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:37,315 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:40:37,315 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:40:37,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:37,316 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:37,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:37,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:37,318 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:40:37,318 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:37,318 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_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93e3c3bb67a4613ef517536c02b2baa8489f9a353eac0e6ca61ce50a9ad293d5 [2023-11-19 07:40:37,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:37,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:37,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:37,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:37,827 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:37,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i [2023-11-19 07:40:41,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:41,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:41,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i [2023-11-19 07:40:41,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data/2a09f6307/c6fe60331d24466791113854a823aa2c/FLAG8ccf11476 [2023-11-19 07:40:41,430 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/data/2a09f6307/c6fe60331d24466791113854a823aa2c [2023-11-19 07:40:41,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:41,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:41,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:41,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:41,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:41,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ebece7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41, skipping insertion in model container [2023-11-19 07:40:41,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,491 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:41,689 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_d828d563-a4aa-4dd3-8019-601f109d5528/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i[915,928] [2023-11-19 07:40:41,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:41,819 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:41,838 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_d828d563-a4aa-4dd3-8019-601f109d5528/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-42.i[915,928] [2023-11-19 07:40:41,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:41,917 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:41,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41 WrapperNode [2023-11-19 07:40:41,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:41,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:41,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:41,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:41,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,010 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 127 [2023-11-19 07:40:42,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:42,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:42,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:42,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:42,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:42,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:42,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:42,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:42,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:42,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:42,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:42,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:40:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:40:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:40:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:42,246 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:42,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:42,926 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:42,936 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:42,936 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:40:42,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:42 BoogieIcfgContainer [2023-11-19 07:40:42,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:42,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:42,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:42,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:42,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:41" (1/3) ... [2023-11-19 07:40:42,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db07bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:42, skipping insertion in model container [2023-11-19 07:40:42,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (2/3) ... [2023-11-19 07:40:42,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db07bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:42, skipping insertion in model container [2023-11-19 07:40:42,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:42" (3/3) ... [2023-11-19 07:40:42,959 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-42.i [2023-11-19 07:40:42,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:42,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:43,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:43,072 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;@136eb03f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:43,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:40:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:40:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:40:43,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:43,098 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:43,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:43,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2007489892, now seen corresponding path program 1 times [2023-11-19 07:40:43,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:43,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504081001] [2023-11-19 07:40:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:43,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:43,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:43,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:43,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:40:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:43,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:40:43,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-19 07:40:43,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:43,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504081001] [2023-11-19 07:40:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504081001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:43,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:43,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115728820] [2023-11-19 07:40:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:43,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:43,571 INFO L87 Difference]: Start difference. First operand has 54 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 07:40:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:43,611 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2023-11-19 07:40:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2023-11-19 07:40:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:43,622 INFO L225 Difference]: With dead ends: 105 [2023-11-19 07:40:43,622 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 07:40:43,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:43,629 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:43,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 07:40:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-19 07:40:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:40:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-11-19 07:40:43,679 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 87 [2023-11-19 07:40:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:43,680 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-11-19 07:40:43,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 07:40:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-11-19 07:40:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:40:43,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:43,686 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:43,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:43,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:43,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:43,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 910056408, now seen corresponding path program 1 times [2023-11-19 07:40:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813632506] [2023-11-19 07:40:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:43,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:43,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:43,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:40:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:44,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:44,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:44,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:44,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813632506] [2023-11-19 07:40:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813632506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:44,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:44,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855078861] [2023-11-19 07:40:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:44,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:44,550 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:44,960 INFO L93 Difference]: Finished difference Result 145 states and 211 transitions. [2023-11-19 07:40:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 87 [2023-11-19 07:40:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:44,970 INFO L225 Difference]: With dead ends: 145 [2023-11-19 07:40:44,970 INFO L226 Difference]: Without dead ends: 98 [2023-11-19 07:40:44,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:44,973 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 68 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:44,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 198 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:40:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-19 07:40:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2023-11-19 07:40:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:40:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2023-11-19 07:40:45,003 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 87 [2023-11-19 07:40:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:45,004 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2023-11-19 07:40:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:45,004 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2023-11-19 07:40:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:45,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:45,009 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:45,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:45,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:45,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:45,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2079259996, now seen corresponding path program 1 times [2023-11-19 07:40:45,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:45,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704593815] [2023-11-19 07:40:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:45,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:45,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:45,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:45,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:40:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:45,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:40:45,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:46,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:46,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:46,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704593815] [2023-11-19 07:40:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704593815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:46,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:46,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:46,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68999334] [2023-11-19 07:40:46,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:46,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:46,072 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:46,812 INFO L93 Difference]: Finished difference Result 189 states and 273 transitions. [2023-11-19 07:40:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:46,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2023-11-19 07:40:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:46,821 INFO L225 Difference]: With dead ends: 189 [2023-11-19 07:40:46,822 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 07:40:46,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:46,824 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 100 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:46,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 252 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:40:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 07:40:46,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2023-11-19 07:40:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 81 states have internal predecessors, (104), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:40:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 176 transitions. [2023-11-19 07:40:46,858 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 176 transitions. Word has length 88 [2023-11-19 07:40:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:46,859 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 176 transitions. [2023-11-19 07:40:46,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 176 transitions. [2023-11-19 07:40:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:46,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:46,864 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:46,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 07:40:47,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:47,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:47,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,070 INFO L85 PathProgramCache]: Analyzing trace with hash 935843622, now seen corresponding path program 1 times [2023-11-19 07:40:47,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:47,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129396470] [2023-11-19 07:40:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:47,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:47,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:40:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:40:47,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:47,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:47,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129396470] [2023-11-19 07:40:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129396470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:47,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:47,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:47,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261596816] [2023-11-19 07:40:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:47,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:47,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:47,324 INFO L87 Difference]: Start difference. First operand 121 states and 176 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:47,556 INFO L93 Difference]: Finished difference Result 213 states and 312 transitions. [2023-11-19 07:40:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2023-11-19 07:40:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:47,566 INFO L225 Difference]: With dead ends: 213 [2023-11-19 07:40:47,569 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 07:40:47,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:47,574 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:47,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 117 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:40:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 07:40:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-19 07:40:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 81 states have internal predecessors, (102), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:40:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2023-11-19 07:40:47,620 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 88 [2023-11-19 07:40:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:47,623 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 174 transitions. [2023-11-19 07:40:47,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 174 transitions. [2023-11-19 07:40:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:47,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:47,628 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:47,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:47,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:47,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1615901992, now seen corresponding path program 1 times [2023-11-19 07:40:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760415363] [2023-11-19 07:40:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:47,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:47,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:40:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:40:48,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-19 07:40:48,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-19 07:40:48,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:48,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760415363] [2023-11-19 07:40:48,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760415363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:48,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:48,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-19 07:40:48,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876163585] [2023-11-19 07:40:48,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:40:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:40:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:40:48,722 INFO L87 Difference]: Start difference. First operand 121 states and 174 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:40:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,031 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2023-11-19 07:40:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:40:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2023-11-19 07:40:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,035 INFO L225 Difference]: With dead ends: 280 [2023-11-19 07:40:50,035 INFO L226 Difference]: Without dead ends: 233 [2023-11-19 07:40:50,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:40:50,038 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 167 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 264 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:40:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-19 07:40:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 207. [2023-11-19 07:40:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 146 states have internal predecessors, (180), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:40:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 276 transitions. [2023-11-19 07:40:50,086 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 276 transitions. Word has length 88 [2023-11-19 07:40:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:50,087 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 276 transitions. [2023-11-19 07:40:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:40:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 276 transitions. [2023-11-19 07:40:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:50,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:50,089 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:50,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:50,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:50,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:50,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 604784742, now seen corresponding path program 1 times [2023-11-19 07:40:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145232387] [2023-11-19 07:40:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:50,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:50,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:40:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:50,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:40:50,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 07:40:51,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:51,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:51,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145232387] [2023-11-19 07:40:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145232387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1544205930] [2023-11-19 07:40:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 07:40:51,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 [2023-11-19 07:40:51,823 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 07:40:51,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 07:40:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:52,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:52,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:40:53,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1544205930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:53,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:40:53,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-11-19 07:40:53,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691169713] [2023-11-19 07:40:53,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:53,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:53,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:53,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:40:53,027 INFO L87 Difference]: Start difference. First operand 207 states and 276 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:55,404 INFO L93 Difference]: Finished difference Result 601 states and 794 transitions. [2023-11-19 07:40:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:55,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2023-11-19 07:40:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:55,420 INFO L225 Difference]: With dead ends: 601 [2023-11-19 07:40:55,420 INFO L226 Difference]: Without dead ends: 494 [2023-11-19 07:40:55,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:40:55,423 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 134 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:55,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 345 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 07:40:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-19 07:40:55,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 416. [2023-11-19 07:40:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 304 states have (on average 1.243421052631579) internal successors, (378), 306 states have internal predecessors, (378), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-19 07:40:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 554 transitions. [2023-11-19 07:40:55,521 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 554 transitions. Word has length 88 [2023-11-19 07:40:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:55,523 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 554 transitions. [2023-11-19 07:40:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:40:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 554 transitions. [2023-11-19 07:40:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:40:55,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:55,538 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:55,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:55,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:55,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:55,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:55,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 17978728, now seen corresponding path program 1 times [2023-11-19 07:40:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843544041] [2023-11-19 07:40:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:55,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:55,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:55,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:55,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 07:40:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:56,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:40:56,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 07:40:57,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:58,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843544041] [2023-11-19 07:40:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843544041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195612119] [2023-11-19 07:40:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 07:40:58,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 [2023-11-19 07:40:58,755 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 07:40:58,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-19 07:40:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:59,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:59,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 07:41:00,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195612119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:00,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:00,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2023-11-19 07:41:00,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846561447] [2023-11-19 07:41:00,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:00,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:00,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:41:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:41:00,146 INFO L87 Difference]: Start difference. First operand 416 states and 554 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:41:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:01,806 INFO L93 Difference]: Finished difference Result 730 states and 972 transitions. [2023-11-19 07:41:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2023-11-19 07:41:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:01,817 INFO L225 Difference]: With dead ends: 730 [2023-11-19 07:41:01,817 INFO L226 Difference]: Without dead ends: 566 [2023-11-19 07:41:01,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:41:01,820 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 83 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:01,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 273 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:41:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-19 07:41:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 521. [2023-11-19 07:41:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 379 states have (on average 1.237467018469657) internal successors, (469), 381 states have internal predecessors, (469), 112 states have call successors, (112), 29 states have call predecessors, (112), 29 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-19 07:41:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 693 transitions. [2023-11-19 07:41:01,920 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 693 transitions. Word has length 88 [2023-11-19 07:41:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:01,921 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 693 transitions. [2023-11-19 07:41:01,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 07:41:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 693 transitions. [2023-11-19 07:41:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:41:01,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:01,923 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:01,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:02,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-11-19 07:41:02,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt [2023-11-19 07:41:02,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:02,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -115829519, now seen corresponding path program 1 times [2023-11-19 07:41:02,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:41:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621217868] [2023-11-19 07:41:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:02,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:41:02,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:41:02,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:41:02,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d828d563-a4aa-4dd3-8019-601f109d5528/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 07:41:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:02,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:41:02,554 INFO L285 TraceCheckSpWp]: Computing forward predicates...