./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/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_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/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_41f8407d-2e87-4215-a380-a7c95178f918/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 7798acf561c7fb0fb1f576a7514070b963e36dc11e67ab2816af6c79c872b890 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:02,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:02,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:27:02,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:02,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:02,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:02,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:02,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:02,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:02,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:02,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:02,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:02,949 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:02,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:02,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:27:02,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:02,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:02,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:02,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:02,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:27:02,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:02,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:27:02,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:02,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:27:02,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:02,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:02,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:02,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:02,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:02,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:02,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:02,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:27:02,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:02,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:02,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:02,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:27:02,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:02,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:02,963 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:02,964 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_41f8407d-2e87-4215-a380-a7c95178f918/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7798acf561c7fb0fb1f576a7514070b963e36dc11e67ab2816af6c79c872b890 [2023-11-12 02:27:03,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:03,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:03,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:03,261 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:03,264 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:03,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i [2023-11-12 02:27:06,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:07,102 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:07,103 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i [2023-11-12 02:27:07,123 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/data/910a1664b/77f2bd27a7b549ea8ecc6a15782744ba/FLAG071841a80 [2023-11-12 02:27:07,145 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/data/910a1664b/77f2bd27a7b549ea8ecc6a15782744ba [2023-11-12 02:27:07,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:07,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:07,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:07,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:07,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:07,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd4c278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07, skipping insertion in model container [2023-11-12 02:27:07,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:07,403 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_41f8407d-2e87-4215-a380-a7c95178f918/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i[919,932] [2023-11-12 02:27:07,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:07,547 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:27:07,564 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_41f8407d-2e87-4215-a380-a7c95178f918/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i[919,932] [2023-11-12 02:27:07,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:07,691 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:27:07,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07 WrapperNode [2023-11-12 02:27:07,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:07,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:07,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:27:07,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:27:07,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,823 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-12 02:27:07,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:07,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:27:07,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:27:07,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:27:07,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:27:07,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:27:07,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:27:07,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:27:07,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (1/1) ... [2023-11-12 02:27:07,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:07,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:27:07,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:27:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:27:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:27:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:27:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:27:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:27:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:27:08,113 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:27:08,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:27:08,918 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:27:08,926 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:27:08,927 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:27:08,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:08 BoogieIcfgContainer [2023-11-12 02:27:08,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:27:08,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:27:08,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:27:08,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:27:08,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:27:07" (1/3) ... [2023-11-12 02:27:08,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f1697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:08, skipping insertion in model container [2023-11-12 02:27:08,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:07" (2/3) ... [2023-11-12 02:27:08,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f1697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:08, skipping insertion in model container [2023-11-12 02:27:08,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:08" (3/3) ... [2023-11-12 02:27:08,939 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-56.i [2023-11-12 02:27:08,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:27:08,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:27:09,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:27:09,031 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;@7af3544d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:27:09,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:27:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-12 02:27:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-12 02:27:09,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:09,062 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:09,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:09,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash -556673794, now seen corresponding path program 1 times [2023-11-12 02:27:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454320745] [2023-11-12 02:27:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:09,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454320745] [2023-11-12 02:27:09,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:27:09,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316754739] [2023-11-12 02:27:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:09,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:09,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:09,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:27:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:09,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:27:09,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-11-12 02:27:09,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316754739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:09,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:09,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:27:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106085225] [2023-11-12 02:27:09,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:27:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:27:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:27:09,825 INFO L87 Difference]: Start difference. First operand has 90 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-12 02:27:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:09,910 INFO L93 Difference]: Finished difference Result 172 states and 304 transitions. [2023-11-12 02:27:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:27:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 193 [2023-11-12 02:27:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:09,928 INFO L225 Difference]: With dead ends: 172 [2023-11-12 02:27:09,929 INFO L226 Difference]: Without dead ends: 85 [2023-11-12 02:27:09,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 02:27:09,946 INFO L413 NwaCegarLoop]: 131 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, 131 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 02:27:09,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-12 02:27:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-12 02:27:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-12 02:27:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2023-11-12 02:27:10,128 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 193 [2023-11-12 02:27:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:10,129 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2023-11-12 02:27:10,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-12 02:27:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2023-11-12 02:27:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-12 02:27:10,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:10,166 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:10,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:27:10,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:27:10,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:10,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1567658550, now seen corresponding path program 1 times [2023-11-12 02:27:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606591964] [2023-11-12 02:27:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:10,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:27:10,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574461186] [2023-11-12 02:27:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:10,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:10,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:27:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:27:10,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 869 proven. 51 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-11-12 02:27:11,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-12 02:27:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606591964] [2023-11-12 02:27:11,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:27:11,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574461186] [2023-11-12 02:27:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574461186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:11,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:11,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:27:11,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235647915] [2023-11-12 02:27:11,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:27:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:27:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:27:11,608 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-12 02:27:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:12,075 INFO L93 Difference]: Finished difference Result 173 states and 264 transitions. [2023-11-12 02:27:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:27:12,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 193 [2023-11-12 02:27:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:12,081 INFO L225 Difference]: With dead ends: 173 [2023-11-12 02:27:12,082 INFO L226 Difference]: Without dead ends: 91 [2023-11-12 02:27:12,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:27:12,085 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 126 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 198 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:27:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-12 02:27:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2023-11-12 02:27:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-12 02:27:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 133 transitions. [2023-11-12 02:27:12,114 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 133 transitions. Word has length 193 [2023-11-12 02:27:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:12,116 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 133 transitions. [2023-11-12 02:27:12,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-12 02:27:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 133 transitions. [2023-11-12 02:27:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-12 02:27:12,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:12,122 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:12,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:12,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:12,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:12,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1279733477, now seen corresponding path program 1 times [2023-11-12 02:27:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032965000] [2023-11-12 02:27:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:12,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:27:12,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315097580] [2023-11-12 02:27:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:12,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:12,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:12,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:12,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:27:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:12,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:27:12,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 717 proven. 63 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-11-12 02:27:13,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 24 proven. 63 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-12 02:27:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032965000] [2023-11-12 02:27:13,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:27:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315097580] [2023-11-12 02:27:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315097580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:13,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:27:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890415493] [2023-11-12 02:27:13,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:27:13,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:27:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:27:13,366 INFO L87 Difference]: Start difference. First operand 89 states and 133 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-11-12 02:27:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:13,720 INFO L93 Difference]: Finished difference Result 181 states and 268 transitions. [2023-11-12 02:27:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:27:13,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 194 [2023-11-12 02:27:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:13,724 INFO L225 Difference]: With dead ends: 181 [2023-11-12 02:27:13,724 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 02:27:13,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:27:13,726 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 64 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:13,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 195 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:27:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 02:27:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-12 02:27:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 states have internal predecessors, (75), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-12 02:27:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2023-11-12 02:27:13,744 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 194 [2023-11-12 02:27:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:13,746 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2023-11-12 02:27:13,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-11-12 02:27:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2023-11-12 02:27:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:27:13,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:13,749 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:13,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:13,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:13,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:13,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1702181467, now seen corresponding path program 1 times [2023-11-12 02:27:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:13,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338853996] [2023-11-12 02:27:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:14,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:27:14,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908236714] [2023-11-12 02:27:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:14,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:14,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:14,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:14,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:27:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:14,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:27:14,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-12 02:27:14,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:14,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338853996] [2023-11-12 02:27:14,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:27:14,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908236714] [2023-11-12 02:27:14,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908236714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:14,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:14,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:27:14,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094262668] [2023-11-12 02:27:14,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:14,380 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-12 02:27:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:14,509 INFO L93 Difference]: Finished difference Result 188 states and 272 transitions. [2023-11-12 02:27:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 195 [2023-11-12 02:27:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:14,514 INFO L225 Difference]: With dead ends: 188 [2023-11-12 02:27:14,515 INFO L226 Difference]: Without dead ends: 98 [2023-11-12 02:27:14,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:14,517 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 68 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:14,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 218 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-12 02:27:14,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-12 02:27:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-12 02:27:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2023-11-12 02:27:14,541 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 195 [2023-11-12 02:27:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:14,542 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2023-11-12 02:27:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-12 02:27:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2023-11-12 02:27:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:27:14,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:14,547 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:14,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:14,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:14,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 884533017, now seen corresponding path program 1 times [2023-11-12 02:27:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816125844] [2023-11-12 02:27:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:14,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:27:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850445744] [2023-11-12 02:27:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:14,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:14,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:14,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:27:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:15,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:27:15,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 929 proven. 108 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-12 02:27:15,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 60 proven. 111 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2023-11-12 02:27:16,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:16,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816125844] [2023-11-12 02:27:16,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:27:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850445744] [2023-11-12 02:27:16,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850445744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:16,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:16,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-12 02:27:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071626549] [2023-11-12 02:27:16,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:27:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:27:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:27:16,148 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 5 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2023-11-12 02:27:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:16,589 INFO L93 Difference]: Finished difference Result 206 states and 286 transitions. [2023-11-12 02:27:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:27:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 5 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) Word has length 195 [2023-11-12 02:27:16,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:16,593 INFO L225 Difference]: With dead ends: 206 [2023-11-12 02:27:16,593 INFO L226 Difference]: Without dead ends: 111 [2023-11-12 02:27:16,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:27:16,595 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 168 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:16,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 234 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:27:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-12 02:27:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2023-11-12 02:27:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-12 02:27:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 143 transitions. [2023-11-12 02:27:16,622 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 143 transitions. Word has length 195 [2023-11-12 02:27:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:16,624 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 143 transitions. [2023-11-12 02:27:16,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 5 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2023-11-12 02:27:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 143 transitions. [2023-11-12 02:27:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:27:16,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:16,628 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:16,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:16,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:16,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2124883293, now seen corresponding path program 1 times [2023-11-12 02:27:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376438075] [2023-11-12 02:27:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:16,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:27:16,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080413887] [2023-11-12 02:27:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:16,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:16,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:16,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:16,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f8407d-2e87-4215-a380-a7c95178f918/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:27:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:17,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-12 02:27:17,232 INFO L285 TraceCheckSpWp]: Computing forward predicates...