./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-16.c --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_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/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_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/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_4b8f74c5-9f94-4130-a328-cdf50a26da0b/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 69674fa9bac4462fab44fafedf177d67851aa51f3860d6fe181d82fe0b856912 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:31,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:31,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:15:31,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:31,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:31,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:31,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:31,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:31,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:31,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:31,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:31,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:31,231 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:31,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:31,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:15:31,233 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:15:31,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:31,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:15:31,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:31,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:15:31,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:31,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:15:31,237 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:15:31,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:15:31,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:31,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:31,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:31,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:31,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:31,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:31,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:31,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:15:31,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:31,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:31,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:31,243 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:15:31,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:31,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:31,244 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:31,244 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_4b8f74c5-9f94-4130-a328-cdf50a26da0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69674fa9bac4462fab44fafedf177d67851aa51f3860d6fe181d82fe0b856912 [2023-11-12 02:15:31,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:31,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:31,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:31,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:31,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:31,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/xcsp/Haystacks-16.c [2023-11-12 02:15:34,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:35,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:35,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/sv-benchmarks/c/xcsp/Haystacks-16.c [2023-11-12 02:15:35,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/data/cd151f002/41b801b4ff244da1b96d0f75f8a7c9e7/FLAG5cf0bd495 [2023-11-12 02:15:35,253 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/data/cd151f002/41b801b4ff244da1b96d0f75f8a7c9e7 [2023-11-12 02:15:35,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:35,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:35,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:35,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:35,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:35,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:35" (1/1) ... [2023-11-12 02:15:35,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385b439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:35, skipping insertion in model container [2023-11-12 02:15:35,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:35" (1/1) ... [2023-11-12 02:15:35,376 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:36,069 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_4b8f74c5-9f94-4130-a328-cdf50a26da0b/sv-benchmarks/c/xcsp/Haystacks-16.c[105300,105313] [2023-11-12 02:15:36,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:36,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:36,350 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_4b8f74c5-9f94-4130-a328-cdf50a26da0b/sv-benchmarks/c/xcsp/Haystacks-16.c[105300,105313] [2023-11-12 02:15:36,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:36,373 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:36,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36 WrapperNode [2023-11-12 02:15:36,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:36,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:36,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:36,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:36,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,650 INFO L138 Inliner]: procedures = 13, calls = 2679, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3968 [2023-11-12 02:15:36,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:36,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:36,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:36,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:36,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:36,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:36,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:36,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:36,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (1/1) ... [2023-11-12 02:15:36,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:36,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:36,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2023-11-12 02:15:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2023-11-12 02:15:37,127 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:37,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:40,059 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:40,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:40,091 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:15:40,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:40 BoogieIcfgContainer [2023-11-12 02:15:40,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:40,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:40,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:40,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:40,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:35" (1/3) ... [2023-11-12 02:15:40,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31deb929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:40, skipping insertion in model container [2023-11-12 02:15:40,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:36" (2/3) ... [2023-11-12 02:15:40,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31deb929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:40, skipping insertion in model container [2023-11-12 02:15:40,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:40" (3/3) ... [2023-11-12 02:15:40,106 INFO L112 eAbstractionObserver]: Analyzing ICFG Haystacks-16.c [2023-11-12 02:15:40,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:40,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:15:40,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:40,251 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;@31417e1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:40,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:15:40,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 2939 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 265 states have internal predecessors, (266), 2672 states have call successors, (2672), 1 states have call predecessors, (2672), 1 states have return successors, (2672), 2672 states have call predecessors, (2672), 2672 states have call successors, (2672) [2023-11-12 02:15:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13620 [2023-11-12 02:15:41,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:41,881 INFO L195 NwaCegarLoop]: trace histogram [2672, 2672, 2672, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1] [2023-11-12 02:15:41,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:41,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash 664765616, now seen corresponding path program 1 times [2023-11-12 02:15:41,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:41,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276795395] [2023-11-12 02:15:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276795395] [2023-11-12 02:15:44,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:15:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442555505] [2023-11-12 02:15:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:44,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:44,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:44,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:44,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:15:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 25096 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:15:50,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14273824 backedges. 5342 proven. 0 refuted. 0 times theorem prover too weak. 14268482 trivial. 0 not checked. [2023-11-12 02:15:51,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442555505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:51,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:51,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006580589] [2023-11-12 02:15:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:51,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:15:51,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:51,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:15:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:15:51,454 INFO L87 Difference]: Start difference. First operand has 2939 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 265 states have internal predecessors, (266), 2672 states have call successors, (2672), 1 states have call predecessors, (2672), 1 states have return successors, (2672), 2672 states have call predecessors, (2672), 2672 states have call successors, (2672) Second operand has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 2 states have call successors, (2672), 2 states have call predecessors, (2672), 1 states have return successors, (2672), 1 states have call predecessors, (2672), 2 states have call successors, (2672) [2023-11-12 02:15:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:51,869 INFO L93 Difference]: Finished difference Result 5872 states and 13886 transitions. [2023-11-12 02:15:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:15:51,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 2 states have call successors, (2672), 2 states have call predecessors, (2672), 1 states have return successors, (2672), 1 states have call predecessors, (2672), 2 states have call successors, (2672) Word has length 13619 [2023-11-12 02:15:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:51,962 INFO L225 Difference]: With dead ends: 5872 [2023-11-12 02:15:51,962 INFO L226 Difference]: Without dead ends: 2936 [2023-11-12 02:15:52,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13618 GetRequests, 13618 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 02:15:52,017 INFO L413 NwaCegarLoop]: 5606 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, 5606 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 02:15:52,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5606 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2023-11-12 02:15:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2936. [2023-11-12 02:15:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 262 states have (on average 1.0) internal successors, (262), 262 states have internal predecessors, (262), 2672 states have call successors, (2672), 1 states have call predecessors, (2672), 1 states have return successors, (2672), 2672 states have call predecessors, (2672), 2672 states have call successors, (2672) [2023-11-12 02:15:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5606 transitions. [2023-11-12 02:15:57,663 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5606 transitions. Word has length 13619 [2023-11-12 02:15:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:57,668 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 5606 transitions. [2023-11-12 02:15:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 2 states have call successors, (2672), 2 states have call predecessors, (2672), 1 states have return successors, (2672), 1 states have call predecessors, (2672), 2 states have call successors, (2672) [2023-11-12 02:15:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5606 transitions. [2023-11-12 02:15:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13620 [2023-11-12 02:15:59,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:59,535 INFO L195 NwaCegarLoop]: trace histogram [2672, 2672, 2672, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1] [2023-11-12 02:15:59,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:59,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:59,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:59,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash -176931152, now seen corresponding path program 1 times [2023-11-12 02:15:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:59,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350644053] [2023-11-12 02:15:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:00,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:16:00,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961388154] [2023-11-12 02:16:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:00,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:16:00,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:00,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:16:00,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8f74c5-9f94-4130-a328-cdf50a26da0b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process