./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 740c05e7b5d3fcdfe5ab87e062a20d2e8112a618dcc0467ee84538e9369ef3d4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:03:24,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:03:24,372 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:03:24,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:03:24,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:03:24,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:03:24,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:03:24,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:03:24,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:03:24,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:03:24,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:03:24,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:03:24,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:03:24,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:03:24,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:03:24,427 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:03:24,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:03:24,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:03:24,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:03:24,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:03:24,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:03:24,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:03:24,431 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:03:24,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:03:24,433 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:03:24,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:03:24,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:03:24,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:03:24,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:03:24,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:03:24,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:03:24,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:03:24,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:03:24,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:03:24,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:03:24,438 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:03:24,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:03:24,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:03:24,439 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:03:24,439 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_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 740c05e7b5d3fcdfe5ab87e062a20d2e8112a618dcc0467ee84538e9369ef3d4 [2023-11-12 02:03:24,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:03:24,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:03:24,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:03:24,791 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:03:24,792 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:03:24,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i [2023-11-12 02:03:27,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:03:28,164 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:03:28,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i [2023-11-12 02:03:28,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/data/9550164aa/b88af751807d42bd9e5feac7c2005ee6/FLAG302834917 [2023-11-12 02:03:28,190 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/data/9550164aa/b88af751807d42bd9e5feac7c2005ee6 [2023-11-12 02:03:28,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:03:28,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:03:28,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:03:28,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:03:28,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:03:28,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f26bb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28, skipping insertion in model container [2023-11-12 02:03:28,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,269 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:03:28,447 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_de3c3181-5f19-4379-a258-11077b573833/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i[919,932] [2023-11-12 02:03:28,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:03:28,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:03:28,619 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_de3c3181-5f19-4379-a258-11077b573833/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i[919,932] [2023-11-12 02:03:28,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:03:28,681 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:03:28,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28 WrapperNode [2023-11-12 02:03:28,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:03:28,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:03:28,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:03:28,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:03:28,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,789 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-12 02:03:28,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:03:28,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:03:28,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:03:28,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:03:28,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:03:28,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:03:28,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:03:28,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:03:28,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (1/1) ... [2023-11-12 02:03:28,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:03:28,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:28,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:03:28,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:03:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:03:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:03:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:03:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:03:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:03:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:03:29,115 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:03:29,117 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:03:29,946 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:03:29,955 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:03:29,955 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:03:29,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:29 BoogieIcfgContainer [2023-11-12 02:03:29,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:03:29,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:03:29,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:03:29,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:03:29,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:03:28" (1/3) ... [2023-11-12 02:03:29,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176d67c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:29, skipping insertion in model container [2023-11-12 02:03:29,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:28" (2/3) ... [2023-11-12 02:03:29,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176d67c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:29, skipping insertion in model container [2023-11-12 02:03:29,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:29" (3/3) ... [2023-11-12 02:03:29,968 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-84.i [2023-11-12 02:03:29,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:03:29,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:03:30,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:03:30,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60a18159, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:03:30,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:03:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-12 02:03:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-12 02:03:30,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:30,098 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:30,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:30,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1239354538, now seen corresponding path program 1 times [2023-11-12 02:03:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881678380] [2023-11-12 02:03:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:30,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881678380] [2023-11-12 02:03:30,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:03:30,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600470099] [2023-11-12 02:03:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:30,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:30,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:30,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:30,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:03:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:30,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:03:30,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2023-11-12 02:03:31,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:03:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600470099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:31,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:31,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:03:31,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10779186] [2023-11-12 02:03:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:31,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:03:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:03:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:03:31,124 INFO L87 Difference]: Start difference. First operand has 135 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-12 02:03:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:31,181 INFO L93 Difference]: Finished difference Result 263 states and 481 transitions. [2023-11-12 02:03:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:03:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) Word has length 314 [2023-11-12 02:03:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:31,195 INFO L225 Difference]: With dead ends: 263 [2023-11-12 02:03:31,195 INFO L226 Difference]: Without dead ends: 131 [2023-11-12 02:03:31,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:03:31,205 INFO L413 NwaCegarLoop]: 211 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, 211 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 [2023-11-12 02:03:31,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:03:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-12 02:03:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-12 02:03:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 78 states have internal predecessors, (109), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-12 02:03:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 211 transitions. [2023-11-12 02:03:31,285 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 211 transitions. Word has length 314 [2023-11-12 02:03:31,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:31,286 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 211 transitions. [2023-11-12 02:03:31,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-12 02:03:31,287 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 211 transitions. [2023-11-12 02:03:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-12 02:03:31,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:31,298 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:31,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:31,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:03:31,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:31,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash 678895180, now seen corresponding path program 1 times [2023-11-12 02:03:31,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:31,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437000980] [2023-11-12 02:03:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:31,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:31,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:31,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361116187] [2023-11-12 02:03:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:31,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:31,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:31,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:03:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:31,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:03:31,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-12 02:03:50,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:03:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437000980] [2023-11-12 02:03:50,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361116187] [2023-11-12 02:03:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361116187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:03:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690143368] [2023-11-12 02:03:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:50,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:03:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:03:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:03:50,695 INFO L87 Difference]: Start difference. First operand 131 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:03:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:56,540 INFO L93 Difference]: Finished difference Result 292 states and 464 transitions. [2023-11-12 02:03:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:03:56,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 314 [2023-11-12 02:03:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:56,548 INFO L225 Difference]: With dead ends: 292 [2023-11-12 02:03:56,548 INFO L226 Difference]: Without dead ends: 164 [2023-11-12 02:03:56,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:03:56,551 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 98 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:56,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 792 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:03:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-12 02:03:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2023-11-12 02:03:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 104 states have internal predecessors, (142), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 02:03:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 252 transitions. [2023-11-12 02:03:56,594 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 252 transitions. Word has length 314 [2023-11-12 02:03:56,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:56,596 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 252 transitions. [2023-11-12 02:03:56,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:03:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 252 transitions. [2023-11-12 02:03:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-12 02:03:56,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:56,606 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:56,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:56,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:56,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:56,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash 885673832, now seen corresponding path program 1 times [2023-11-12 02:03:56,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:56,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887901858] [2023-11-12 02:03:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:56,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:56,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83113070] [2023-11-12 02:03:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:56,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:56,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:56,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:03:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:57,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:03:57,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 438 proven. 144 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2023-11-12 02:03:57,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:03:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 6 proven. 144 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-11-12 02:03:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887901858] [2023-11-12 02:03:58,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83113070] [2023-11-12 02:03:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83113070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:03:58,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:03:58,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 02:03:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036712826] [2023-11-12 02:03:58,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:03:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:03:58,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:03:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:03:58,180 INFO L87 Difference]: Start difference. First operand 161 states and 252 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-11-12 02:03:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:58,880 INFO L93 Difference]: Finished difference Result 329 states and 509 transitions. [2023-11-12 02:03:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:03:58,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 315 [2023-11-12 02:03:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:58,900 INFO L225 Difference]: With dead ends: 329 [2023-11-12 02:03:58,900 INFO L226 Difference]: Without dead ends: 171 [2023-11-12 02:03:58,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:03:58,905 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 123 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:58,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 429 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:03:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-12 02:03:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2023-11-12 02:03:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 109 states have (on average 1.348623853211009) internal successors, (147), 110 states have internal predecessors, (147), 55 states have call successors, (55), 4 states have call predecessors, (55), 4 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 02:03:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 257 transitions. [2023-11-12 02:03:58,941 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 257 transitions. Word has length 315 [2023-11-12 02:03:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:58,943 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 257 transitions. [2023-11-12 02:03:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-11-12 02:03:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 257 transitions. [2023-11-12 02:03:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-12 02:03:58,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:58,951 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:58,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:59,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:59,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:59,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash -125443418, now seen corresponding path program 1 times [2023-11-12 02:03:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729247959] [2023-11-12 02:03:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:59,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247471611] [2023-11-12 02:03:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:59,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:59,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:59,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:59,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:03:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:59,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:03:59,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-12 02:04:00,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:04:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729247959] [2023-11-12 02:04:00,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:00,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247471611] [2023-11-12 02:04:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247471611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:04:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113017945] [2023-11-12 02:04:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:00,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:04:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:04:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:04:00,236 INFO L87 Difference]: Start difference. First operand 169 states and 257 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:04:00,477 INFO L93 Difference]: Finished difference Result 350 states and 525 transitions. [2023-11-12 02:04:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:04:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 315 [2023-11-12 02:04:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:04:00,483 INFO L225 Difference]: With dead ends: 350 [2023-11-12 02:04:00,483 INFO L226 Difference]: Without dead ends: 184 [2023-11-12 02:04:00,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:04:00,486 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 47 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:04:00,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 974 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:04:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-12 02:04:00,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2023-11-12 02:04:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 119 states have internal predecessors, (153), 57 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:04:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 267 transitions. [2023-11-12 02:04:00,522 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 267 transitions. Word has length 315 [2023-11-12 02:04:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:04:00,523 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 267 transitions. [2023-11-12 02:04:00,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 267 transitions. [2023-11-12 02:04:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-12 02:04:00,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:00,532 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:04:00,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:04:00,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:00,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:00,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 225566311, now seen corresponding path program 1 times [2023-11-12 02:04:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501317473] [2023-11-12 02:04:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:00,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757008606] [2023-11-12 02:04:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:00,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:00,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:00,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:00,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:04:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:00,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:04:01,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-12 02:04:02,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:04:02,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501317473] [2023-11-12 02:04:02,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757008606] [2023-11-12 02:04:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757008606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:02,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:04:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526483058] [2023-11-12 02:04:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:02,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:04:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:02,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:04:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:04:02,665 INFO L87 Difference]: Start difference. First operand 181 states and 267 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:04:03,452 INFO L93 Difference]: Finished difference Result 483 states and 704 transitions. [2023-11-12 02:04:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:04:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-12 02:04:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:04:03,459 INFO L225 Difference]: With dead ends: 483 [2023-11-12 02:04:03,459 INFO L226 Difference]: Without dead ends: 313 [2023-11-12 02:04:03,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:04:03,462 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 145 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:04:03,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 969 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:04:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-12 02:04:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 211. [2023-11-12 02:04:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 147 states have (on average 1.3197278911564625) internal successors, (194), 149 states have internal predecessors, (194), 57 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:04:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 308 transitions. [2023-11-12 02:04:03,529 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 308 transitions. Word has length 316 [2023-11-12 02:04:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:04:03,533 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 308 transitions. [2023-11-12 02:04:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 308 transitions. [2023-11-12 02:04:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-12 02:04:03,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:03,537 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:04:03,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:04:03,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:03,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:03,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 926630889, now seen corresponding path program 1 times [2023-11-12 02:04:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83541832] [2023-11-12 02:04:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:03,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654497003] [2023-11-12 02:04:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:03,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:03,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:03,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:03,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:04:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:04,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:04:04,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-12 02:04:05,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:04:05,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83541832] [2023-11-12 02:04:05,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654497003] [2023-11-12 02:04:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654497003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:05,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:05,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:04:05,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746642781] [2023-11-12 02:04:05,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:05,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:04:05,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:05,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:04:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:04:05,188 INFO L87 Difference]: Start difference. First operand 211 states and 308 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:04:06,068 INFO L93 Difference]: Finished difference Result 519 states and 751 transitions. [2023-11-12 02:04:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:04:06,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-12 02:04:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:04:06,074 INFO L225 Difference]: With dead ends: 519 [2023-11-12 02:04:06,074 INFO L226 Difference]: Without dead ends: 319 [2023-11-12 02:04:06,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:04:06,077 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 141 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:04:06,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1134 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:04:06,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-12 02:04:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 211. [2023-11-12 02:04:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 147 states have (on average 1.3197278911564625) internal successors, (194), 149 states have internal predecessors, (194), 57 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:04:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 308 transitions. [2023-11-12 02:04:06,124 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 308 transitions. Word has length 316 [2023-11-12 02:04:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:04:06,127 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 308 transitions. [2023-11-12 02:04:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 308 transitions. [2023-11-12 02:04:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-12 02:04:06,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:06,133 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:04:06,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 02:04:06,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:06,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:06,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash -361239703, now seen corresponding path program 1 times [2023-11-12 02:04:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:06,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453869103] [2023-11-12 02:04:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:06,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030482653] [2023-11-12 02:04:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:06,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:06,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:06,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:04:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:06,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:04:06,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-12 02:04:08,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:04:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:08,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453869103] [2023-11-12 02:04:08,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030482653] [2023-11-12 02:04:08,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030482653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:08,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:08,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:04:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964755037] [2023-11-12 02:04:08,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:08,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:04:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:04:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:04:08,514 INFO L87 Difference]: Start difference. First operand 211 states and 308 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:04:09,503 INFO L93 Difference]: Finished difference Result 519 states and 751 transitions. [2023-11-12 02:04:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:04:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 316 [2023-11-12 02:04:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:04:09,509 INFO L225 Difference]: With dead ends: 519 [2023-11-12 02:04:09,509 INFO L226 Difference]: Without dead ends: 319 [2023-11-12 02:04:09,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:04:09,511 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 119 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:04:09,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1110 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:04:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-12 02:04:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 215. [2023-11-12 02:04:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 151 states have (on average 1.3245033112582782) internal successors, (200), 153 states have internal predecessors, (200), 57 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (57), 55 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:04:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 314 transitions. [2023-11-12 02:04:09,553 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 314 transitions. Word has length 316 [2023-11-12 02:04:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:04:09,553 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 314 transitions. [2023-11-12 02:04:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-12 02:04:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 314 transitions. [2023-11-12 02:04:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-12 02:04:09,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:09,556 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:04:09,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:04:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:09,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:09,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 339824875, now seen corresponding path program 1 times [2023-11-12 02:04:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414103210] [2023-11-12 02:04:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:09,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:09,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480773942] [2023-11-12 02:04:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:09,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:09,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c3181-5f19-4379-a258-11077b573833/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:04:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:10,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-12 02:04:10,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1752 proven. 258 refuted. 0 times theorem prover too weak. 3090 trivial. 0 not checked. [2023-11-12 02:04:12,147 INFO L327 TraceCheckSpWp]: Computing backward predicates...