./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78350471832631b990ab07cb00fceb180be6701dc1d364c97cf9dbeb83c7a9cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:48,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:48,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:48:48,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:48,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:48,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:48,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:48,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:48,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:48,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:48,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:48,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:48,945 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:48,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:48,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:48,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:48,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:48,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:48,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:48,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:48,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:48,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:48,951 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:48,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:48,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:48,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:48,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:48,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:48,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:48,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:48,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:48,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:48,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:48,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:48,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:48,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:48,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:48,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:48,959 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:48,959 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_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78350471832631b990ab07cb00fceb180be6701dc1d364c97cf9dbeb83c7a9cd [2023-11-06 22:48:49,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:49,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:49,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:49,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:49,373 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:49,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-59.i [2023-11-06 22:48:52,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:52,653 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:52,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-59.i [2023-11-06 22:48:52,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/data/59d0d0d23/2986fa9a19b84d7d8846109c5ab5d369/FLAGb32faf361 [2023-11-06 22:48:52,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/data/59d0d0d23/2986fa9a19b84d7d8846109c5ab5d369 [2023-11-06 22:48:52,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:52,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:52,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:52,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:52,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:52,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54109dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52, skipping insertion in model container [2023-11-06 22:48:52,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,723 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:52,978 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_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-59.i[915,928] [2023-11-06 22:48:53,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:53,033 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:53,049 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_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-59.i[915,928] [2023-11-06 22:48:53,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:53,087 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:53,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53 WrapperNode [2023-11-06 22:48:53,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:53,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:53,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:53,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:53,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,155 INFO L138 Inliner]: procedures = 26, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 61 [2023-11-06 22:48:53,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:53,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:53,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:53,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:53,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:53,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:53,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:53,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:53,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (1/1) ... [2023-11-06 22:48:53,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:53,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:48:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:48:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:53,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:53,333 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:53,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:53,542 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:53,548 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:53,548 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:48:53,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:53 BoogieIcfgContainer [2023-11-06 22:48:53,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:53,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:53,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:53,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:53,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:52" (1/3) ... [2023-11-06 22:48:53,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c02a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:53, skipping insertion in model container [2023-11-06 22:48:53,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:53" (2/3) ... [2023-11-06 22:48:53,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c02a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:53, skipping insertion in model container [2023-11-06 22:48:53,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:53" (3/3) ... [2023-11-06 22:48:53,561 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-59.i [2023-11-06 22:48:53,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:53,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:48:53,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:53,638 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@701673cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:53,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:48:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:48:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:48:53,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:53,653 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:53,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:53,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2027417680, now seen corresponding path program 1 times [2023-11-06 22:48:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:53,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909475031] [2023-11-06 22:48:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909475031] [2023-11-06 22:48:53,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:48:53,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149812306] [2023-11-06 22:48:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:53,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:53,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:53,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:48:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:53,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:48:53,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-06 22:48:54,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149812306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:54,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:48:54,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146469503] [2023-11-06 22:48:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:54,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:48:54,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:48:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:48:54,105 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:48:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:54,139 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2023-11-06 22:48:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:48:54,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-11-06 22:48:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:54,150 INFO L225 Difference]: With dead ends: 57 [2023-11-06 22:48:54,150 INFO L226 Difference]: Without dead ends: 28 [2023-11-06 22:48:54,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:48:54,157 INFO L413 NwaCegarLoop]: 37 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, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:54,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:48:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-06 22:48:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-06 22:48:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:48:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2023-11-06 22:48:54,209 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 48 [2023-11-06 22:48:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:54,209 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2023-11-06 22:48:54,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:48:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2023-11-06 22:48:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:48:54,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:54,213 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:54,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:48:54,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:54,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:54,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 440007794, now seen corresponding path program 1 times [2023-11-06 22:48:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810589078] [2023-11-06 22:48:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:54,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:48:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632166703] [2023-11-06 22:48:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:54,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:54,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:48:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:54,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:48:54,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:48:57,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:48:58,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:58,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810589078] [2023-11-06 22:48:58,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:48:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632166703] [2023-11-06 22:48:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632166703] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:58,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:48:58,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-06 22:48:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067528646] [2023-11-06 22:48:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:58,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:48:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:48:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:48:58,718 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:48:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:58,976 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2023-11-06 22:48:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:48:58,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 48 [2023-11-06 22:48:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:58,979 INFO L225 Difference]: With dead ends: 51 [2023-11-06 22:48:58,979 INFO L226 Difference]: Without dead ends: 49 [2023-11-06 22:48:58,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:48:58,980 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 20 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:58,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 195 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-06 22:48:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2023-11-06 22:48:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:48:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-06 22:48:58,998 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 48 [2023-11-06 22:48:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:58,999 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-06 22:48:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:48:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-06 22:48:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:48:59,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:59,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:59,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:48:59,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:48:59,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:59,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 372016035, now seen corresponding path program 1 times [2023-11-06 22:48:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:59,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680758654] [2023-11-06 22:48:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:48:59,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682624170] [2023-11-06 22:48:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:59,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:59,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:59,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:48:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:48:59,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:49:00,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:49:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680758654] [2023-11-06 22:49:01,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682624170] [2023-11-06 22:49:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682624170] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:01,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-06 22:49:01,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125061593] [2023-11-06 22:49:01,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:01,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:01,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:01,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:49:01,077 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:49:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:02,983 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2023-11-06 22:49:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:49:02,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 49 [2023-11-06 22:49:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:02,986 INFO L225 Difference]: With dead ends: 60 [2023-11-06 22:49:02,986 INFO L226 Difference]: Without dead ends: 58 [2023-11-06 22:49:02,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:49:02,988 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 36 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:02,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 217 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:49:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-06 22:49:03,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 31. [2023-11-06 22:49:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:49:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-06 22:49:03,011 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 49 [2023-11-06 22:49:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:03,012 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-06 22:49:03,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:49:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-06 22:49:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:49:03,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:03,015 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:03,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:49:03,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:03,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1301673624, now seen corresponding path program 1 times [2023-11-06 22:49:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:03,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012011098] [2023-11-06 22:49:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:03,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:03,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933813926] [2023-11-06 22:49:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:03,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:03,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:03,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:03,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:49:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:03,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:49:03,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:49:03,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:49:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:05,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012011098] [2023-11-06 22:49:05,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:05,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933813926] [2023-11-06 22:49:05,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933813926] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:05,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:05,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-06 22:49:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96412892] [2023-11-06 22:49:05,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:05,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:05,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:05,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:49:05,678 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:49:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:07,521 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2023-11-06 22:49:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:49:07,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 50 [2023-11-06 22:49:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:07,523 INFO L225 Difference]: With dead ends: 62 [2023-11-06 22:49:07,523 INFO L226 Difference]: Without dead ends: 60 [2023-11-06 22:49:07,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:49:07,525 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 35 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:07,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 223 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:49:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-06 22:49:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 31. [2023-11-06 22:49:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:49:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-06 22:49:07,534 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 50 [2023-11-06 22:49:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:07,535 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-06 22:49:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:49:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-06 22:49:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:49:07,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:07,537 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:07,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:07,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:07,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1299826582, now seen corresponding path program 1 times [2023-11-06 22:49:07,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:07,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988491853] [2023-11-06 22:49:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:07,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653953045] [2023-11-06 22:49:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:07,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:07,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:07,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:49:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:07,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:49:07,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:49:07,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988491853] [2023-11-06 22:49:07,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653953045] [2023-11-06 22:49:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653953045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:07,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:07,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166988275] [2023-11-06 22:49:07,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:07,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:07,845 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:49:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:07,864 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2023-11-06 22:49:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 50 [2023-11-06 22:49:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:07,866 INFO L225 Difference]: With dead ends: 60 [2023-11-06 22:49:07,866 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:49:07,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:07,868 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:07,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:49:07,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:49:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:49:07,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2023-11-06 22:49:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:07,870 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:49:07,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:49:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:49:07,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:49:07,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:49:07,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:08,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:08,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:49:11,416 INFO L902 garLoopResultBuilder]: At program point L64-2(lines 64 70) the Hoare annotation is: true [2023-11-06 22:49:11,417 INFO L899 garLoopResultBuilder]: For program point L64-3(lines 64 70) no Hoare annotation was computed. [2023-11-06 22:49:11,418 INFO L902 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: true [2023-11-06 22:49:11,418 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 22:49:11,418 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-06 22:49:11,418 INFO L902 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2023-11-06 22:49:11,418 INFO L895 garLoopResultBuilder]: At program point L19-3(line 19) the Hoare annotation is: (let ((.cse0 (mod ~var_1_3~0 256)) (.cse2 (mod ~var_1_4~0 256)) (.cse1 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)))) (or (and (= (mod ~var_1_1~0 4294967296) .cse0) (not (= |ULTIMATE.start_property_#res#1| 0)) .cse1) (and .cse1 (not (= (mod ~var_1_2~0 256) 0)) (not (= (div 16 .cse2) .cse0))) (and (or (= .cse2 0) (< .cse0 (+ .cse2 1))) .cse1))) [2023-11-06 22:49:11,418 INFO L902 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: true [2023-11-06 22:49:11,419 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 61 72) the Hoare annotation is: false [2023-11-06 22:49:11,419 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:49:11,419 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:49:11,419 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 42) no Hoare annotation was computed. [2023-11-06 22:49:11,419 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 22:49:11,419 INFO L899 garLoopResultBuilder]: For program point L53(lines 43 54) no Hoare annotation was computed. [2023-11-06 22:49:11,419 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-11-06 22:49:11,420 INFO L895 garLoopResultBuilder]: At program point property_returnLabel#1(lines 57 60) the Hoare annotation is: (let ((.cse1 (mod ~var_1_4~0 256)) (.cse4 (mod ~var_1_1~0 4294967296)) (.cse2 (mod ~var_1_3~0 256))) (let ((.cse0 (= .cse4 .cse2)) (.cse5 (= (mod ~var_1_2~0 256) 0)) (.cse3 (= (div 16 .cse1) .cse2))) (and (not (= |ULTIMATE.start_property_#res#1| 0)) (or .cse0 (< .cse1 .cse2)) (or .cse3 (= .cse4 (+ .cse1 .cse2)) .cse5 (< .cse2 (+ .cse1 1))) (or .cse0 (and (not .cse5) (not .cse3)))))) [2023-11-06 22:49:11,420 INFO L902 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2023-11-06 22:49:11,420 INFO L902 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: true [2023-11-06 22:49:11,420 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 37) no Hoare annotation was computed. [2023-11-06 22:49:11,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:49:11,420 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 41) no Hoare annotation was computed. [2023-11-06 22:49:11,420 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-06 22:49:11,421 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:49:11,421 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 38) no Hoare annotation was computed. [2023-11-06 22:49:11,421 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2023-11-06 22:49:11,421 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2023-11-06 22:49:11,421 INFO L902 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: true [2023-11-06 22:49:11,421 INFO L902 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: true [2023-11-06 22:49:11,421 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-06 22:49:11,421 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-06 22:49:11,422 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-06 22:49:11,422 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-06 22:49:11,427 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:49:11,429 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:49:11,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:49:11 BoogieIcfgContainer [2023-11-06 22:49:11,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:49:11,463 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:49:11,464 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:49:11,464 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:49:11,465 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:53" (3/4) ... [2023-11-06 22:49:11,467 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:49:11,472 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 22:49:11,477 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-06 22:49:11,478 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:49:11,478 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:49:11,478 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:49:11,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\result == 0)) && (((var_1_1 % 4294967296) == (var_1_3 % 256)) || ((var_1_4 % 256) < (var_1_3 % 256)))) && (((((16 / (var_1_4 % 256)) == (var_1_3 % 256)) || ((var_1_1 % 4294967296) == ((var_1_4 % 256) + (var_1_3 % 256)))) || ((var_1_2 % 256) == 0)) || ((var_1_3 % 256) < ((var_1_4 % 256) + 1)))) && (((var_1_1 % 4294967296) == (var_1_3 % 256)) || (!(((var_1_2 % 256) == 0)) && !(((16 / (var_1_4 % 256)) == (var_1_3 % 256)))))) [2023-11-06 22:49:11,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((var_1_1 % 4294967296) == (var_1_3 % 256)) && !((\result == 0))) && !((cond == 0))) || ((!((cond == 0)) && !(((var_1_2 % 256) == 0))) && !(((16 / (var_1_4 % 256)) == (var_1_3 % 256))))) || ((((var_1_4 % 256) == 0) || ((var_1_3 % 256) < ((var_1_4 % 256) + 1))) && !((cond == 0)))) [2023-11-06 22:49:11,532 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\result == 0)) && (((var_1_1 % 4294967296) == (var_1_3 % 256)) || ((var_1_4 % 256) < (var_1_3 % 256)))) && (((((16 / (var_1_4 % 256)) == (var_1_3 % 256)) || ((var_1_1 % 4294967296) == ((var_1_4 % 256) + (var_1_3 % 256)))) || ((var_1_2 % 256) == 0)) || ((var_1_3 % 256) < ((var_1_4 % 256) + 1)))) && (((var_1_1 % 4294967296) == (var_1_3 % 256)) || (!(((var_1_2 % 256) == 0)) && !(((16 / (var_1_4 % 256)) == (var_1_3 % 256)))))) [2023-11-06 22:49:11,532 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((var_1_1 % 4294967296) == (var_1_3 % 256)) && !((\result == 0))) && !((cond == 0))) || ((!((cond == 0)) && !(((var_1_2 % 256) == 0))) && !(((16 / (var_1_4 % 256)) == (var_1_3 % 256))))) || ((((var_1_4 % 256) == 0) || ((var_1_3 % 256) < ((var_1_4 % 256) + 1))) && !((cond == 0)))) [2023-11-06 22:49:11,540 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:49:11,541 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:49:11,541 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:49:11,549 INFO L158 Benchmark]: Toolchain (without parser) took 18867.84ms. Allocated memory was 165.7MB in the beginning and 325.1MB in the end (delta: 159.4MB). Free memory was 99.8MB in the beginning and 287.9MB in the end (delta: -188.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:11,550 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 165.7MB. Free memory was 139.8MB in the beginning and 139.6MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:11,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.67ms. Allocated memory is still 165.7MB. Free memory was 99.6MB in the beginning and 131.5MB in the end (delta: -31.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2023-11-06 22:49:11,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.91ms. Allocated memory is still 165.7MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:11,551 INFO L158 Benchmark]: Boogie Preprocessor took 28.19ms. Allocated memory is still 165.7MB. Free memory was 129.4MB in the beginning and 128.9MB in the end (delta: 480.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:11,552 INFO L158 Benchmark]: RCFGBuilder took 366.36ms. Allocated memory is still 165.7MB. Free memory was 128.1MB in the beginning and 116.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:49:11,552 INFO L158 Benchmark]: TraceAbstraction took 17909.36ms. Allocated memory was 165.7MB in the beginning and 325.1MB in the end (delta: 159.4MB). Free memory was 115.6MB in the beginning and 291.0MB in the end (delta: -175.5MB). Peak memory consumption was 170.3MB. Max. memory is 16.1GB. [2023-11-06 22:49:11,553 INFO L158 Benchmark]: Witness Printer took 77.85ms. Allocated memory is still 325.1MB. Free memory was 291.0MB in the beginning and 287.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:11,554 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 165.7MB. Free memory was 139.8MB in the beginning and 139.6MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.67ms. Allocated memory is still 165.7MB. Free memory was 99.6MB in the beginning and 131.5MB in the end (delta: -31.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.91ms. Allocated memory is still 165.7MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.19ms. Allocated memory is still 165.7MB. Free memory was 129.4MB in the beginning and 128.9MB in the end (delta: 480.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.36ms. Allocated memory is still 165.7MB. Free memory was 128.1MB in the beginning and 116.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 17909.36ms. Allocated memory was 165.7MB in the beginning and 325.1MB in the end (delta: 159.4MB). Free memory was 115.6MB in the beginning and 291.0MB in the end (delta: -175.5MB). Peak memory consumption was 170.3MB. Max. memory is 16.1GB. * Witness Printer took 77.85ms. Allocated memory is still 325.1MB. Free memory was 291.0MB in the beginning and 287.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 735 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 492 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 243 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 74 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 32 PreInvPairs, 45 NumberOfFragments, 148 HoareAnnotationTreeSize, 32 FomulaSimplifications, 2651 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 965 FormulaSimplificationTreeSizeReductionInter, 3.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 899 SizeOfPredicates, 26 NumberOfNonLiveVariables, 609 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 621/672 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((!((\result == 0)) && (((var_1_1 % 4294967296) == (var_1_3 % 256)) || ((var_1_4 % 256) < (var_1_3 % 256)))) && (((((16 / (var_1_4 % 256)) == (var_1_3 % 256)) || ((var_1_1 % 4294967296) == ((var_1_4 % 256) + (var_1_3 % 256)))) || ((var_1_2 % 256) == 0)) || ((var_1_3 % 256) < ((var_1_4 % 256) + 1)))) && (((var_1_1 % 4294967296) == (var_1_3 % 256)) || (!(((var_1_2 % 256) == 0)) && !(((16 / (var_1_4 % 256)) == (var_1_3 % 256)))))) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((((var_1_1 % 4294967296) == (var_1_3 % 256)) && !((\result == 0))) && !((cond == 0))) || ((!((cond == 0)) && !(((var_1_2 % 256) == 0))) && !(((16 / (var_1_4 % 256)) == (var_1_3 % 256))))) || ((((var_1_4 % 256) == 0) || ((var_1_3 % 256) < ((var_1_4 % 256) + 1))) && !((cond == 0)))) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-06 22:49:11,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01ee6a1e-9cc1-4347-bec8-ce4be6ba9474/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE