./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-39.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-39.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 dfd4199778f3470f18ddded1b4acee60166184917bf25c1bba255dc5dd2abf98 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:28:09,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:28:09,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:28:09,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:28:09,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:28:09,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:28:09,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:28:09,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:28:09,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:28:09,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:28:09,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:28:09,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:28:09,267 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:28:09,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:28:09,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:28:09,269 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:28:09,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:28:09,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:28:09,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:28:09,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:28:09,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:28:09,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:28:09,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:28:09,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:28:09,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:28:09,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:28:09,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:28:09,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:28:09,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:09,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:28:09,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:28:09,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:28:09,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:28:09,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:28:09,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:28:09,283 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:28:09,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:28:09,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:28:09,283 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:28:09,283 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_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd4199778f3470f18ddded1b4acee60166184917bf25c1bba255dc5dd2abf98 [2023-11-06 22:28:09,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:28:09,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:28:09,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:28:09,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:28:09,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:28:09,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-39.i [2023-11-06 22:28:12,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:28:13,320 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:28:13,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-39.i [2023-11-06 22:28:13,345 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/data/ac285a509/f197f6319fde475c926cb23139b26e83/FLAG1370811f2 [2023-11-06 22:28:13,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/data/ac285a509/f197f6319fde475c926cb23139b26e83 [2023-11-06 22:28:13,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:28:13,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:28:13,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:13,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:28:13,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:28:13,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65106c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13, skipping insertion in model container [2023-11-06 22:28:13,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:28:13,591 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_d5d39ee5-fa48-4173-b146-045788d0bb19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-39.i[916,929] [2023-11-06 22:28:13,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:13,700 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:28:13,723 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_d5d39ee5-fa48-4173-b146-045788d0bb19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-39.i[916,929] [2023-11-06 22:28:13,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:13,839 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:28:13,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13 WrapperNode [2023-11-06 22:28:13,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:13,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:13,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:28:13,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:28:13,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,933 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 204 [2023-11-06 22:28:13,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:13,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:28:13,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:28:13,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:28:13,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:28:13,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:28:13,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:28:13,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:28:13,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (1/1) ... [2023-11-06 22:28:13,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:14,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:28:14,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:28:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:28:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:28:14,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:28:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:28:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:28:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:28:14,184 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:28:14,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:28:14,747 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:28:14,755 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:28:14,755 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:28:14,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:14 BoogieIcfgContainer [2023-11-06 22:28:14,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:28:14,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:28:14,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:28:14,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:28:14,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:13" (1/3) ... [2023-11-06 22:28:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f3e75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:14, skipping insertion in model container [2023-11-06 22:28:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:13" (2/3) ... [2023-11-06 22:28:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f3e75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:14, skipping insertion in model container [2023-11-06 22:28:14,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:14" (3/3) ... [2023-11-06 22:28:14,772 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-39.i [2023-11-06 22:28:14,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:28:14,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:28:14,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:28:14,881 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=LoopsAndPotentialCycles, 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;@7fe851e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:28:14,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:28:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-06 22:28:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-06 22:28:14,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:14,911 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:14,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:14,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1288870933, now seen corresponding path program 1 times [2023-11-06 22:28:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:14,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968516720] [2023-11-06 22:28:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:14,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968516720] [2023-11-06 22:28:15,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:28:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42344842] [2023-11-06 22:28:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:15,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:15,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:15,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:28:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:15,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:28:15,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-11-06 22:28:15,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:28:15,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42344842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:15,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:15,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049661639] [2023-11-06 22:28:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:15,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:28:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:28:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:28:15,607 INFO L87 Difference]: Start difference. First operand has 88 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 22:28:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:15,645 INFO L93 Difference]: Finished difference Result 169 states and 290 transitions. [2023-11-06 22:28:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:28:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 166 [2023-11-06 22:28:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:15,656 INFO L225 Difference]: With dead ends: 169 [2023-11-06 22:28:15,656 INFO L226 Difference]: Without dead ends: 84 [2023-11-06 22:28:15,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:28:15,664 INFO L413 NwaCegarLoop]: 129 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, 129 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 [2023-11-06 22:28:15,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-06 22:28:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-06 22:28:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-06 22:28:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 129 transitions. [2023-11-06 22:28:15,718 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 129 transitions. Word has length 166 [2023-11-06 22:28:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:15,719 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 129 transitions. [2023-11-06 22:28:15,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 22:28:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 129 transitions. [2023-11-06 22:28:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-06 22:28:15,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:15,724 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:15,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:28:15,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:15,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -861045449, now seen corresponding path program 1 times [2023-11-06 22:28:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117550885] [2023-11-06 22:28:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:16,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262278819] [2023-11-06 22:28:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:16,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:16,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:16,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:28:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:16,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:28:16,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-06 22:28:16,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:28:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117550885] [2023-11-06 22:28:16,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262278819] [2023-11-06 22:28:16,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262278819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:16,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:16,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345970821] [2023-11-06 22:28:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:16,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:16,698 INFO L87 Difference]: Start difference. First operand 84 states and 129 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-06 22:28:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:16,904 INFO L93 Difference]: Finished difference Result 196 states and 302 transitions. [2023-11-06 22:28:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 166 [2023-11-06 22:28:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:16,913 INFO L225 Difference]: With dead ends: 196 [2023-11-06 22:28:16,915 INFO L226 Difference]: Without dead ends: 115 [2023-11-06 22:28:16,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:16,920 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 28 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:16,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 207 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:28:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-06 22:28:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2023-11-06 22:28:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-06 22:28:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 168 transitions. [2023-11-06 22:28:16,953 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 168 transitions. Word has length 166 [2023-11-06 22:28:16,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:16,956 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 168 transitions. [2023-11-06 22:28:16,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-06 22:28:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 168 transitions. [2023-11-06 22:28:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-06 22:28:16,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:16,971 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:16,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:17,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:17,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:17,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash -862892491, now seen corresponding path program 1 times [2023-11-06 22:28:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:17,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416426456] [2023-11-06 22:28:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:17,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:17,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244772894] [2023-11-06 22:28:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:17,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:17,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:28:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:17,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:28:17,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 563 proven. 39 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-11-06 22:28:17,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-11-06 22:28:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:17,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416426456] [2023-11-06 22:28:17,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244772894] [2023-11-06 22:28:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244772894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:17,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:17,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:28:17,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203166999] [2023-11-06 22:28:17,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:18,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:28:18,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:28:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:28:18,003 INFO L87 Difference]: Start difference. First operand 108 states and 168 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-11-06 22:28:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:18,314 INFO L93 Difference]: Finished difference Result 219 states and 338 transitions. [2023-11-06 22:28:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:28:18,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 166 [2023-11-06 22:28:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:18,318 INFO L225 Difference]: With dead ends: 219 [2023-11-06 22:28:18,318 INFO L226 Difference]: Without dead ends: 114 [2023-11-06 22:28:18,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:28:18,321 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 183 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 244 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:28:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-06 22:28:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2023-11-06 22:28:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.411764705882353) internal successors, (120), 85 states have internal predecessors, (120), 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) [2023-11-06 22:28:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 168 transitions. [2023-11-06 22:28:18,343 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 168 transitions. Word has length 166 [2023-11-06 22:28:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:18,343 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 168 transitions. [2023-11-06 22:28:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-11-06 22:28:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 168 transitions. [2023-11-06 22:28:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:28:18,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:18,347 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:18,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:18,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:18,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:18,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash 938853724, now seen corresponding path program 1 times [2023-11-06 22:28:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025223571] [2023-11-06 22:28:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:18,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:18,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:18,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143211592] [2023-11-06 22:28:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:18,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:18,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:18,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:28:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:28:18,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-06 22:28:18,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:28:18,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:18,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025223571] [2023-11-06 22:28:18,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:18,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143211592] [2023-11-06 22:28:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143211592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:18,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:18,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:28:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710303213] [2023-11-06 22:28:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:18,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:28:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:28:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:28:18,893 INFO L87 Difference]: Start difference. First operand 112 states and 168 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-06 22:28:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:19,171 INFO L93 Difference]: Finished difference Result 470 states and 700 transitions. [2023-11-06 22:28:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 167 [2023-11-06 22:28:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:19,177 INFO L225 Difference]: With dead ends: 470 [2023-11-06 22:28:19,177 INFO L226 Difference]: Without dead ends: 361 [2023-11-06 22:28:19,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:19,179 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 264 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:19,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 375 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:28:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-06 22:28:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 218. [2023-11-06 22:28:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 175 states have (on average 1.4228571428571428) internal successors, (249), 176 states have internal predecessors, (249), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:28:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 325 transitions. [2023-11-06 22:28:19,214 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 325 transitions. Word has length 167 [2023-11-06 22:28:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:19,215 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 325 transitions. [2023-11-06 22:28:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-06 22:28:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 325 transitions. [2023-11-06 22:28:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:28:19,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:19,219 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:19,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:19,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:19,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:19,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:19,427 INFO L85 PathProgramCache]: Analyzing trace with hash -341009954, now seen corresponding path program 1 times [2023-11-06 22:28:19,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:19,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487279003] [2023-11-06 22:28:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:19,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:19,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783481007] [2023-11-06 22:28:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:19,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:19,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:19,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:19,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:28:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:28:19,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 533 proven. 24 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-11-06 22:28:19,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 45 proven. 24 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-11-06 22:28:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487279003] [2023-11-06 22:28:19,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783481007] [2023-11-06 22:28:19,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783481007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:19,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:19,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:28:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003518231] [2023-11-06 22:28:20,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:28:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:28:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:28:20,003 INFO L87 Difference]: Start difference. First operand 218 states and 325 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:28:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:20,274 INFO L93 Difference]: Finished difference Result 443 states and 656 transitions. [2023-11-06 22:28:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:28:20,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 167 [2023-11-06 22:28:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:20,279 INFO L225 Difference]: With dead ends: 443 [2023-11-06 22:28:20,280 INFO L226 Difference]: Without dead ends: 209 [2023-11-06 22:28:20,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:28:20,282 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 134 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:20,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 239 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:28:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-06 22:28:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2023-11-06 22:28:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 159 states have (on average 1.389937106918239) internal successors, (221), 160 states have internal predecessors, (221), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:28:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 297 transitions. [2023-11-06 22:28:20,316 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 297 transitions. Word has length 167 [2023-11-06 22:28:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:20,318 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 297 transitions. [2023-11-06 22:28:20,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:28:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 297 transitions. [2023-11-06 22:28:20,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:28:20,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:20,325 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:20,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:20,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:20,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:20,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:20,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1079402334, now seen corresponding path program 1 times [2023-11-06 22:28:20,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:20,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061293101] [2023-11-06 22:28:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:20,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:20,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:20,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191708892] [2023-11-06 22:28:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:20,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:20,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:20,602 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:20,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:28:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:21,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:28:21,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 113 proven. 66 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2023-11-06 22:28:32,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-06 22:28:33,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:33,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061293101] [2023-11-06 22:28:33,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:33,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191708892] [2023-11-06 22:28:33,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191708892] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:33,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:28:33,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-11-06 22:28:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730550998] [2023-11-06 22:28:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:33,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:28:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:28:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=239, Unknown=5, NotChecked=0, Total=306 [2023-11-06 22:28:33,520 INFO L87 Difference]: Start difference. First operand 203 states and 297 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-06 22:28:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:42,035 INFO L93 Difference]: Finished difference Result 803 states and 1197 transitions. [2023-11-06 22:28:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:28:42,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 167 [2023-11-06 22:28:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:42,041 INFO L225 Difference]: With dead ends: 803 [2023-11-06 22:28:42,041 INFO L226 Difference]: Without dead ends: 603 [2023-11-06 22:28:42,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=131, Invalid=514, Unknown=5, NotChecked=0, Total=650 [2023-11-06 22:28:42,044 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 358 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:42,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 828 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:28:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-11-06 22:28:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 231. [2023-11-06 22:28:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 187 states have (on average 1.3850267379679144) internal successors, (259), 188 states have internal predecessors, (259), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:28:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 335 transitions. [2023-11-06 22:28:42,075 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 335 transitions. Word has length 167 [2023-11-06 22:28:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:42,076 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 335 transitions. [2023-11-06 22:28:42,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-06 22:28:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 335 transitions. [2023-11-06 22:28:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:28:42,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:42,080 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:42,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:42,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:42,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:42,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1337567772, now seen corresponding path program 1 times [2023-11-06 22:28:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:42,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70645891] [2023-11-06 22:28:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:42,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:42,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252517010] [2023-11-06 22:28:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:42,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:42,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:42,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:28:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:42,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:28:42,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 113 proven. 66 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2023-11-06 22:28:43,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 3 proven. 66 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-11-06 22:28:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70645891] [2023-11-06 22:28:44,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252517010] [2023-11-06 22:28:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252517010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:44,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-06 22:28:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363029410] [2023-11-06 22:28:44,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:44,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:28:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:28:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:28:44,391 INFO L87 Difference]: Start difference. First operand 231 states and 335 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-11-06 22:28:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:50,903 INFO L93 Difference]: Finished difference Result 1473 states and 2119 transitions. [2023-11-06 22:28:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-06 22:28:50,908 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 167 [2023-11-06 22:28:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:50,932 INFO L225 Difference]: With dead ends: 1473 [2023-11-06 22:28:50,932 INFO L226 Difference]: Without dead ends: 1245 [2023-11-06 22:28:50,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=940, Invalid=3616, Unknown=0, NotChecked=0, Total=4556 [2023-11-06 22:28:50,938 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 952 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:50,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1016 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-06 22:28:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-11-06 22:28:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 576. [2023-11-06 22:28:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 485 states have (on average 1.377319587628866) internal successors, (668), 487 states have internal predecessors, (668), 76 states have call successors, (76), 14 states have call predecessors, (76), 14 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-06 22:28:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 820 transitions. [2023-11-06 22:28:51,048 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 820 transitions. Word has length 167 [2023-11-06 22:28:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:51,052 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 820 transitions. [2023-11-06 22:28:51,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-11-06 22:28:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 820 transitions. [2023-11-06 22:28:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:28:51,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:51,056 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:51,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:51,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:51,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 860547616, now seen corresponding path program 1 times [2023-11-06 22:28:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152347754] [2023-11-06 22:28:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:51,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:51,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144290260] [2023-11-06 22:28:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:51,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:51,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:51,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:51,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:28:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:51,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:28:51,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 157 proven. 186 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2023-11-06 22:28:53,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-11-06 22:28:54,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152347754] [2023-11-06 22:28:54,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144290260] [2023-11-06 22:28:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144290260] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:54,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:54,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-11-06 22:28:54,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725413202] [2023-11-06 22:28:54,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:54,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:28:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:28:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:28:54,358 INFO L87 Difference]: Start difference. First operand 576 states and 820 transitions. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 22 states have internal predecessors, (104), 6 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-06 22:29:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:05,306 INFO L93 Difference]: Finished difference Result 1602 states and 2239 transitions. [2023-11-06 22:29:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-06 22:29:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 22 states have internal predecessors, (104), 6 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) Word has length 167 [2023-11-06 22:29:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:05,314 INFO L225 Difference]: With dead ends: 1602 [2023-11-06 22:29:05,314 INFO L226 Difference]: Without dead ends: 1029 [2023-11-06 22:29:05,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1029, Invalid=3663, Unknown=0, NotChecked=0, Total=4692 [2023-11-06 22:29:05,319 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 521 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:05,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 872 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 22:29:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-11-06 22:29:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 926. [2023-11-06 22:29:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 747 states have (on average 1.3306559571619812) internal successors, (994), 751 states have internal predecessors, (994), 138 states have call successors, (138), 40 states have call predecessors, (138), 40 states have return successors, (138), 134 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-06 22:29:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1270 transitions. [2023-11-06 22:29:05,488 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1270 transitions. Word has length 167 [2023-11-06 22:29:05,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:05,489 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1270 transitions. [2023-11-06 22:29:05,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 22 states have internal predecessors, (104), 6 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-06 22:29:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1270 transitions. [2023-11-06 22:29:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:29:05,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:05,493 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:05,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:05,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:05,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:05,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1034171490, now seen corresponding path program 1 times [2023-11-06 22:29:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:05,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021221928] [2023-11-06 22:29:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:05,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190535680] [2023-11-06 22:29:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:05,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:05,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:05,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:05,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:29:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:06,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:29:06,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 48 proven. 132 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-06 22:29:07,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 3 proven. 66 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-11-06 22:29:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021221928] [2023-11-06 22:29:07,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190535680] [2023-11-06 22:29:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190535680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:07,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:29:07,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-11-06 22:29:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837612835] [2023-11-06 22:29:07,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:07,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:29:07,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:29:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:29:07,598 INFO L87 Difference]: Start difference. First operand 926 states and 1270 transitions. Second operand has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 6 states have call successors, (48), 4 states have call predecessors, (48), 5 states have return successors, (48), 4 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-06 22:29:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:10,655 INFO L93 Difference]: Finished difference Result 2660 states and 3661 transitions. [2023-11-06 22:29:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:29:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 6 states have call successors, (48), 4 states have call predecessors, (48), 5 states have return successors, (48), 4 states have call predecessors, (48), 6 states have call successors, (48) Word has length 167 [2023-11-06 22:29:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:10,668 INFO L225 Difference]: With dead ends: 2660 [2023-11-06 22:29:10,668 INFO L226 Difference]: Without dead ends: 1805 [2023-11-06 22:29:10,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=617, Invalid=1275, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 22:29:10,674 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 895 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:10,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 876 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:29:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2023-11-06 22:29:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 676. [2023-11-06 22:29:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 546 states have (on average 1.3205128205128205) internal successors, (721), 549 states have internal predecessors, (721), 100 states have call successors, (100), 29 states have call predecessors, (100), 29 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-06 22:29:10,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 921 transitions. [2023-11-06 22:29:10,839 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 921 transitions. Word has length 167 [2023-11-06 22:29:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:10,839 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 921 transitions. [2023-11-06 22:29:10,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 6 states have call successors, (48), 4 states have call predecessors, (48), 5 states have return successors, (48), 4 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-06 22:29:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 921 transitions. [2023-11-06 22:29:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-06 22:29:10,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:10,843 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:10,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:11,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:11,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:11,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1662663111, now seen corresponding path program 1 times [2023-11-06 22:29:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592045309] [2023-11-06 22:29:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:11,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:11,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:11,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146390073] [2023-11-06 22:29:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:11,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:11,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:11,093 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:11,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d39ee5-fa48-4173-b146-045788d0bb19/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:29:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:11,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:29:11,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 48 proven. 132 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-06 22:29:21,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:22,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592045309] [2023-11-06 22:29:22,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146390073] [2023-11-06 22:29:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146390073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:22,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:29:22,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 22:29:22,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442421038] [2023-11-06 22:29:22,841 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:22,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:29:22,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:29:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=209, Unknown=4, NotChecked=0, Total=272 [2023-11-06 22:29:22,843 INFO L87 Difference]: Start difference. First operand 676 states and 921 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-06 22:29:24,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:26,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:28,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:30,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:32,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:34,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:37,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:39,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:41,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:43,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:45,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:47,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:53,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:29:55,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:01,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:03,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:05,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:07,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:09,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:11,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:13,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:15,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:19,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:21,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:23,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:25,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:27,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:29,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:31,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:33,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:35,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:37,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:39,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:41,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:43,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:45,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:47,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:49,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:51,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:54,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:56,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:30:58,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:00,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:02,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:04,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:06,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:08,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:10,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:12,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:14,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:16,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:18,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:20,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:22,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:24,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:26,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:28,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:30,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:32,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:34,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:37,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:39,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:41,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:43,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:45,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:47,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:49,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:51,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:53,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:55,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:57,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:31:59,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:01,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:03,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:05,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:07,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:09,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:11,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:13,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:15,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:17,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:19,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:21,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:23,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:25,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:32:27,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]