./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.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_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/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_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/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_b6183db3-9625-4d70-b845-8dde06986a62/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 de989290354f3dc4a33e8016ac19134bd2d52924bea893dcc22d1da9ef4d1086 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:04:18,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:04:18,845 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:04:18,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:04:18,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:04:18,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:04:18,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:04:18,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:04:18,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:04:18,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:04:18,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:04:18,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:04:18,899 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:04:18,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:04:18,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:04:18,902 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:04:18,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:04:18,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:04:18,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:04:18,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:04:18,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:04:18,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:04:18,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:04:18,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:04:18,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:04:18,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:04:18,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:04:18,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:04:18,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:04:18,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:04:18,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:04:18,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:04:18,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:04:18,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:04:18,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:04:18,911 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:04:18,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:04:18,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:04:18,911 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:04:18,912 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_b6183db3-9625-4d70-b845-8dde06986a62/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de989290354f3dc4a33e8016ac19134bd2d52924bea893dcc22d1da9ef4d1086 [2023-11-12 02:04:19,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:04:19,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:04:19,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:04:19,262 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:04:19,263 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:04:19,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i [2023-11-12 02:04:22,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:04:22,564 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:04:22,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i [2023-11-12 02:04:22,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/data/bf5343d8f/eab0992cd9da4ec6bcd4b2b7feef1ccb/FLAG29480198b [2023-11-12 02:04:22,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/data/bf5343d8f/eab0992cd9da4ec6bcd4b2b7feef1ccb [2023-11-12 02:04:22,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:04:22,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:04:22,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:04:22,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:04:22,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:04:22,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:04:22" (1/1) ... [2023-11-12 02:04:22,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fec0885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:22, skipping insertion in model container [2023-11-12 02:04:22,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:04:22" (1/1) ... [2023-11-12 02:04:22,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:04:22,902 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_b6183db3-9625-4d70-b845-8dde06986a62/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i[916,929] [2023-11-12 02:04:23,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:04:23,036 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:04:23,055 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_b6183db3-9625-4d70-b845-8dde06986a62/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i[916,929] [2023-11-12 02:04:23,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:04:23,163 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:04:23,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23 WrapperNode [2023-11-12 02:04:23,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:04:23,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:04:23,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:04:23,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:04:23,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,237 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 270 [2023-11-12 02:04:23,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:04:23,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:04:23,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:04:23,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:04:23,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:04:23,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:04:23,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:04:23,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:04:23,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (1/1) ... [2023-11-12 02:04:23,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:04:23,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:23,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:04:23,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:04:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:04:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:04:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:04:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:04:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:04:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:04:23,501 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:04:23,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:04:24,117 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:04:24,125 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:04:24,126 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:04:24,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:04:24 BoogieIcfgContainer [2023-11-12 02:04:24,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:04:24,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:04:24,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:04:24,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:04:24,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:04:22" (1/3) ... [2023-11-12 02:04:24,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a75c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:04:24, skipping insertion in model container [2023-11-12 02:04:24,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:23" (2/3) ... [2023-11-12 02:04:24,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a75c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:04:24, skipping insertion in model container [2023-11-12 02:04:24,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:04:24" (3/3) ... [2023-11-12 02:04:24,144 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-64.i [2023-11-12 02:04:24,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:04:24,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:04:24,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:04:24,316 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;@42047761, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:04:24,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:04:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 74 states have (on average 1.472972972972973) internal successors, (109), 75 states have internal predecessors, (109), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:04:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-12 02:04:24,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:24,341 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:24,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:24,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1242243523, now seen corresponding path program 1 times [2023-11-12 02:04:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216905211] [2023-11-12 02:04:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:24,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552556475] [2023-11-12 02:04:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:24,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:24,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:24,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:04:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:24,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:04:24,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 600 proven. 18 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2023-11-12 02:04:25,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:04:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 66 proven. 18 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-12 02:04:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:25,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216905211] [2023-11-12 02:04:25,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552556475] [2023-11-12 02:04:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552556475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:04:25,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:04:25,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 02:04:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434529630] [2023-11-12 02:04:25,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:04:25,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:04:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:04:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:04:25,703 INFO L87 Difference]: Start difference. First operand has 106 states, 74 states have (on average 1.472972972972973) internal successors, (109), 75 states have internal predecessors, (109), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-12 02:04:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:04:26,172 INFO L93 Difference]: Finished difference Result 213 states and 367 transitions. [2023-11-12 02:04:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:04:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 189 [2023-11-12 02:04:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:04:26,185 INFO L225 Difference]: With dead ends: 213 [2023-11-12 02:04:26,186 INFO L226 Difference]: Without dead ends: 110 [2023-11-12 02:04:26,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:04:26,193 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 334 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:04:26,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 471 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:04:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-12 02:04:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2023-11-12 02:04:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:04:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 161 transitions. [2023-11-12 02:04:26,253 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 161 transitions. Word has length 189 [2023-11-12 02:04:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:04:26,254 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 161 transitions. [2023-11-12 02:04:26,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-12 02:04:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 161 transitions. [2023-11-12 02:04:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-12 02:04:26,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:26,260 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:26,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:04:26,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:04:26,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:26,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1863488985, now seen corresponding path program 1 times [2023-11-12 02:04:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780905815] [2023-11-12 02:04:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:26,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:26,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505852558] [2023-11-12 02:04:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:26,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:26,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:26,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:26,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:04:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:27,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-12 02:04:27,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 940 proven. 174 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-11-12 02:04:30,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:04:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780905815] [2023-11-12 02:04:33,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505852558] [2023-11-12 02:04:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505852558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:04:33,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:04:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-12 02:04:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904284889] [2023-11-12 02:04:33,037 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:04:33,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-12 02:04:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-12 02:04:33,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2023-11-12 02:04:33,041 INFO L87 Difference]: Start difference. First operand 106 states and 161 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 18 states have internal predecessors, (71), 6 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2023-11-12 02:04:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:04:35,493 INFO L93 Difference]: Finished difference Result 508 states and 752 transitions. [2023-11-12 02:04:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-12 02:04:35,494 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 18 states have internal predecessors, (71), 6 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 192 [2023-11-12 02:04:35,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:04:35,500 INFO L225 Difference]: With dead ends: 508 [2023-11-12 02:04:35,501 INFO L226 Difference]: Without dead ends: 405 [2023-11-12 02:04:35,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=776, Invalid=2194, Unknown=0, NotChecked=0, Total=2970 [2023-11-12 02:04:35,506 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 673 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:04:35,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1282 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:04:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-12 02:04:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 337. [2023-11-12 02:04:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 228 states have (on average 1.3245614035087718) internal successors, (302), 230 states have internal predecessors, (302), 96 states have call successors, (96), 12 states have call predecessors, (96), 12 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 02:04:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 494 transitions. [2023-11-12 02:04:35,642 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 494 transitions. Word has length 192 [2023-11-12 02:04:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:04:35,644 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 494 transitions. [2023-11-12 02:04:35,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 18 states have internal predecessors, (71), 6 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2023-11-12 02:04:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 494 transitions. [2023-11-12 02:04:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-12 02:04:35,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:04:35,649 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:35,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:04:35,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:35,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:04:35,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1899839489, now seen corresponding path program 1 times [2023-11-12 02:04:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:35,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475410604] [2023-11-12 02:04:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:35,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:04:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304614036] [2023-11-12 02:04:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:35,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:04:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:35,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:04:35,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:04:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:36,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-12 02:04:36,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:04:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 861 proven. 168 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2023-11-12 02:04:37,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:04:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 132 proven. 186 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2023-11-12 02:04:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475410604] [2023-11-12 02:04:41,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:04:41,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304614036] [2023-11-12 02:04:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304614036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:04:41,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:04:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-12 02:04:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508162628] [2023-11-12 02:04:41,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:04:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-12 02:04:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-12 02:04:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=817, Unknown=1, NotChecked=0, Total=1122 [2023-11-12 02:04:41,438 INFO L87 Difference]: Start difference. First operand 337 states and 494 transitions. Second operand has 34 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 28 states have internal predecessors, (105), 9 states have call successors, (46), 5 states have call predecessors, (46), 10 states have return successors, (47), 9 states have call predecessors, (47), 9 states have call successors, (47) [2023-11-12 02:04:46,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 02:05:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:01,352 INFO L93 Difference]: Finished difference Result 1372 states and 1916 transitions. [2023-11-12 02:05:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-12 02:05:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 28 states have internal predecessors, (105), 9 states have call successors, (46), 5 states have call predecessors, (46), 10 states have return successors, (47), 9 states have call predecessors, (47), 9 states have call successors, (47) Word has length 193 [2023-11-12 02:05:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:01,376 INFO L225 Difference]: With dead ends: 1372 [2023-11-12 02:05:01,376 INFO L226 Difference]: Without dead ends: 1215 [2023-11-12 02:05:01,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4479 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=3598, Invalid=10443, Unknown=1, NotChecked=0, Total=14042 [2023-11-12 02:05:01,386 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1253 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 564 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:01,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1827 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 1881 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2023-11-12 02:05:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-12 02:05:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 447. [2023-11-12 02:05:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 350 states have (on average 1.437142857142857) internal successors, (503), 352 states have internal predecessors, (503), 78 states have call successors, (78), 18 states have call predecessors, (78), 18 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-12 02:05:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 659 transitions. [2023-11-12 02:05:01,526 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 659 transitions. Word has length 193 [2023-11-12 02:05:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:05:01,531 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 659 transitions. [2023-11-12 02:05:01,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 28 states have internal predecessors, (105), 9 states have call successors, (46), 5 states have call predecessors, (46), 10 states have return successors, (47), 9 states have call predecessors, (47), 9 states have call successors, (47) [2023-11-12 02:05:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 659 transitions. [2023-11-12 02:05:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-12 02:05:01,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:01,538 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:01,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:05:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:05:01,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:01,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 706184065, now seen corresponding path program 1 times [2023-11-12 02:05:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:01,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340316835] [2023-11-12 02:05:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:01,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:05:01,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548121061] [2023-11-12 02:05:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:01,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:05:01,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:05:01,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:05:01,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6183db3-9625-4d70-b845-8dde06986a62/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:05:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:02,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-12 02:05:02,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:05:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 938 proven. 177 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-11-12 02:05:08,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:05:09,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:09,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340316835] [2023-11-12 02:05:09,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:05:09,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548121061] [2023-11-12 02:05:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548121061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:05:09,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:05:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-11-12 02:05:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269179696] [2023-11-12 02:05:09,931 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:05:09,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-12 02:05:09,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-12 02:05:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:05:09,935 INFO L87 Difference]: Start difference. First operand 447 states and 659 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 20 states have internal predecessors, (72), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (29), 5 states have call predecessors, (29), 7 states have call successors, (29)