./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/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_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-27.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/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_d033c45f-2267-461c-a698-a03188bbad87/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 47e63b013ba5a4bad17f0c24c4a898ba0d6a9a1edaa8e8eb07c4e72f0000c552 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:15:58,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:15:59,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:15:59,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:15:59,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:15:59,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:15:59,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:15:59,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:15:59,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:15:59,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:15:59,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:15:59,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:15:59,109 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:15:59,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:15:59,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:15:59,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:15:59,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:15:59,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:15:59,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:15:59,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:15:59,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:15:59,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:15:59,114 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:15:59,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:15:59,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:15:59,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:15:59,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:15:59,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:15:59,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:15:59,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:15:59,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:15:59,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:15:59,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:15:59,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:15:59,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:15:59,120 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:15:59,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:15:59,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:15:59,121 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:15:59,121 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_d033c45f-2267-461c-a698-a03188bbad87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47e63b013ba5a4bad17f0c24c4a898ba0d6a9a1edaa8e8eb07c4e72f0000c552 [2023-11-06 22:15:59,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:15:59,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:15:59,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:15:59,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:15:59,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:15:59,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-27.i [2023-11-06 22:16:02,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:16:02,744 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:16:02,745 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-27.i [2023-11-06 22:16:02,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/data/e7e1617d7/8b52d531493b46619c3a8239f2cc2cbf/FLAG75a802f37 [2023-11-06 22:16:02,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/data/e7e1617d7/8b52d531493b46619c3a8239f2cc2cbf [2023-11-06 22:16:02,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:16:02,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:16:02,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:02,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:16:02,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:16:02,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dd994e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02, skipping insertion in model container [2023-11-06 22:16:02,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,813 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:16:02,970 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_d033c45f-2267-461c-a698-a03188bbad87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-27.i[915,928] [2023-11-06 22:16:03,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:03,021 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:16:03,031 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_d033c45f-2267-461c-a698-a03188bbad87/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-27.i[915,928] [2023-11-06 22:16:03,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:03,074 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:16:03,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03 WrapperNode [2023-11-06 22:16:03,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:03,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:03,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:16:03,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:16:03,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,132 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 113 [2023-11-06 22:16:03,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:03,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:16:03,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:16:03,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:16:03,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:16:03,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:16:03,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:16:03,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:16:03,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (1/1) ... [2023-11-06 22:16:03,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:16:03,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:03,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:03,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:16:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:16:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:16:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:16:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:16:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:16:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:16:03,411 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:16:03,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:16:03,791 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:16:03,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:16:03,798 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:16:03,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:03 BoogieIcfgContainer [2023-11-06 22:16:03,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:16:03,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:16:03,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:16:03,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:16:03,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:16:02" (1/3) ... [2023-11-06 22:16:03,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdf6822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:03, skipping insertion in model container [2023-11-06 22:16:03,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:03" (2/3) ... [2023-11-06 22:16:03,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdf6822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:03, skipping insertion in model container [2023-11-06 22:16:03,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:03" (3/3) ... [2023-11-06 22:16:03,810 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-27.i [2023-11-06 22:16:03,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:16:03,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:16:03,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:16:03,897 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;@2260f1ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:16:03,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:16:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:16:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 22:16:03,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:03,915 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:03,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:03,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:03,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2135603685, now seen corresponding path program 1 times [2023-11-06 22:16:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:03,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071684700] [2023-11-06 22:16:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:03,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:04,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071684700] [2023-11-06 22:16:04,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:16:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793026845] [2023-11-06 22:16:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:04,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:04,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:04,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:04,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:16:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:16:04,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-11-06 22:16:04,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:04,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793026845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:04,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:04,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:16:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837519670] [2023-11-06 22:16:04,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:04,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:16:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:16:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:16:04,479 INFO L87 Difference]: Start difference. First operand has 51 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:16:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:04,525 INFO L93 Difference]: Finished difference Result 99 states and 162 transitions. [2023-11-06 22:16:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:16:04,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 107 [2023-11-06 22:16:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:04,536 INFO L225 Difference]: With dead ends: 99 [2023-11-06 22:16:04,537 INFO L226 Difference]: Without dead ends: 47 [2023-11-06 22:16:04,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 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 22:16:04,546 INFO L413 NwaCegarLoop]: 71 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, 71 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 22:16:04,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-06 22:16:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-06 22:16:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:16:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2023-11-06 22:16:04,610 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 107 [2023-11-06 22:16:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:04,611 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2023-11-06 22:16:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:16:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2023-11-06 22:16:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 22:16:04,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:04,617 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:04,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:04,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:04,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:04,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:04,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2005264103, now seen corresponding path program 1 times [2023-11-06 22:16:04,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:04,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031749852] [2023-11-06 22:16:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:04,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:04,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832800635] [2023-11-06 22:16:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:04,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:04,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:16:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:16:05,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 310 proven. 48 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-06 22:16:37,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-11-06 22:17:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031749852] [2023-11-06 22:17:22,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832800635] [2023-11-06 22:17:22,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832800635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:22,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:17:22,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2023-11-06 22:17:22,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688852561] [2023-11-06 22:17:22,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:22,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:17:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:17:22,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=630, Unknown=13, NotChecked=0, Total=870 [2023-11-06 22:17:22,009 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 6 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-06 22:17:42,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:17:45,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:17:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:46,462 INFO L93 Difference]: Finished difference Result 292 states and 400 transitions. [2023-11-06 22:17:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-06 22:17:46,466 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 6 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 107 [2023-11-06 22:17:46,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:46,472 INFO L225 Difference]: With dead ends: 292 [2023-11-06 22:17:46,472 INFO L226 Difference]: Without dead ends: 290 [2023-11-06 22:17:46,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=1353, Invalid=4184, Unknown=13, NotChecked=0, Total=5550 [2023-11-06 22:17:46,477 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 564 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:46,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 552 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2023-11-06 22:17:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-06 22:17:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 128. [2023-11-06 22:17:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 82 states have internal predecessors, (94), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:17:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 178 transitions. [2023-11-06 22:17:46,530 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 178 transitions. Word has length 107 [2023-11-06 22:17:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:46,531 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 178 transitions. [2023-11-06 22:17:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 6 states have call successors, (34), 4 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-06 22:17:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 178 transitions. [2023-11-06 22:17:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 22:17:46,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:46,535 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:46,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:46,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:46,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -514695831, now seen corresponding path program 1 times [2023-11-06 22:17:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:46,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336312729] [2023-11-06 22:17:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:46,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511259235] [2023-11-06 22:17:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:46,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:46,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:46,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:46,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:17:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:47,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-06 22:17:47,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 320 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-06 22:18:14,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:01,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:01,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336312729] [2023-11-06 22:19:01,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:19:01,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511259235] [2023-11-06 22:19:01,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511259235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:01,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:19:01,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-06 22:19:01,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977343092] [2023-11-06 22:19:01,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:01,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:19:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:19:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=746, Unknown=1, NotChecked=0, Total=992 [2023-11-06 22:19:01,616 INFO L87 Difference]: Start difference. First operand 128 states and 178 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:19:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:05,625 INFO L93 Difference]: Finished difference Result 226 states and 299 transitions. [2023-11-06 22:19:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:19:05,626 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 107 [2023-11-06 22:19:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:05,630 INFO L225 Difference]: With dead ends: 226 [2023-11-06 22:19:05,630 INFO L226 Difference]: Without dead ends: 224 [2023-11-06 22:19:05,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=614, Invalid=1835, Unknown=1, NotChecked=0, Total=2450 [2023-11-06 22:19:05,634 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 116 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:05,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 493 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:19:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-06 22:19:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2023-11-06 22:19:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 100 states have internal predecessors, (113), 43 states have call successors, (43), 9 states have call predecessors, (43), 9 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-06 22:19:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-11-06 22:19:05,677 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 107 [2023-11-06 22:19:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:05,678 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-11-06 22:19:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:19:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-11-06 22:19:05,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 22:19:05,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:05,681 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:05,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:05,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:05,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:05,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:05,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1609644823, now seen corresponding path program 1 times [2023-11-06 22:19:05,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:05,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381896564] [2023-11-06 22:19:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:05,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:05,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:19:05,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612921462] [2023-11-06 22:19:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:05,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:05,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:05,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:05,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:19:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:19:06,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:19:06,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:06,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381896564] [2023-11-06 22:19:06,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:19:06,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612921462] [2023-11-06 22:19:06,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612921462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:06,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:06,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802211833] [2023-11-06 22:19:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:06,192 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:19:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:06,344 INFO L93 Difference]: Finished difference Result 313 states and 404 transitions. [2023-11-06 22:19:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2023-11-06 22:19:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:06,349 INFO L225 Difference]: With dead ends: 313 [2023-11-06 22:19:06,349 INFO L226 Difference]: Without dead ends: 164 [2023-11-06 22:19:06,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:06,352 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 70 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:06,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 248 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-06 22:19:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 145. [2023-11-06 22:19:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.108695652173913) internal successors, (102), 93 states have internal predecessors, (102), 43 states have call successors, (43), 9 states have call predecessors, (43), 9 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-06 22:19:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2023-11-06 22:19:06,388 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 107 [2023-11-06 22:19:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:06,389 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2023-11-06 22:19:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:19:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2023-11-06 22:19:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:19:06,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:06,392 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:06,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:06,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:06,606 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:06,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 988738115, now seen corresponding path program 1 times [2023-11-06 22:19:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546764997] [2023-11-06 22:19:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:06,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:19:06,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327866157] [2023-11-06 22:19:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:06,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:06,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:06,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:19:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:19:06,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:19:06,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:06,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546764997] [2023-11-06 22:19:06,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:19:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327866157] [2023-11-06 22:19:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327866157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:06,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434100955] [2023-11-06 22:19:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:06,929 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:19:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:07,056 INFO L93 Difference]: Finished difference Result 212 states and 268 transitions. [2023-11-06 22:19:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:19:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2023-11-06 22:19:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:07,058 INFO L225 Difference]: With dead ends: 212 [2023-11-06 22:19:07,058 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:19:07,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:07,062 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 33 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:07,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 78 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:19:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:19:07,064 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 22:19:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:19:07,064 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2023-11-06 22:19:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:07,065 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:19:07,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:19:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:19:07,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:19:07,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:19:07,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:07,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:07,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:19:08,711 INFO L899 garLoopResultBuilder]: For program point L85(lines 60 86) no Hoare annotation was computed. [2023-11-06 22:19:08,712 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 58) no Hoare annotation was computed. [2023-11-06 22:19:08,712 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 22:19:08,712 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-06 22:19:08,712 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-06 22:19:08,712 INFO L895 garLoopResultBuilder]: At program point L19-3(line 19) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,712 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256))) (and (<= 127 .cse0) (<= .cse0 254) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,713 INFO L895 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256))) (and (<= 127 .cse0) (<= 63 (mod ~var_1_11~0 256)) (<= .cse0 254) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,717 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 95 107) the Hoare annotation is: true [2023-11-06 22:19:08,718 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-06 22:19:08,718 INFO L895 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,718 INFO L895 garLoopResultBuilder]: At program point L65-1(line 65) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,718 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:19:08,719 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:19:08,719 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 22:19:08,719 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 57) no Hoare annotation was computed. [2023-11-06 22:19:08,719 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-06 22:19:08,719 INFO L895 garLoopResultBuilder]: At program point property_returnLabel#1(lines 91 94) the Hoare annotation is: (and (let ((.cse11 (mod ~var_1_12~0 256)) (.cse10 (mod ~var_1_11~0 256)) (.cse7 (mod ~var_1_10~0 256))) (let ((.cse0 (= |ULTIMATE.start_property_#res#1| 1)) (.cse1 (<= 127 .cse7)) (.cse2 (<= 63 .cse10)) (.cse3 (<= .cse7 254)) (.cse4 (<= .cse10 127)) (.cse5 (not (= (mod ~var_1_14~0 256) 0))) (.cse6 (<= .cse11 127)) (.cse8 (= (* 2 (mod ~last_1_var_1_9~0 256)) ~var_1_1~0)) (.cse9 (= ~last_1_var_1_13~0 ~var_1_13~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (+ ~var_1_9~0 1) .cse7) .cse8 (<= (+ ~var_1_3~0 1) ~var_1_5~0) .cse9) (and .cse0 .cse1 .cse2 .cse3 (= (+ 64 .cse10) (+ ~var_1_9~0 .cse11)) (<= ~var_1_5~0 ~var_1_3~0) .cse4 .cse5 .cse6 .cse8 .cse9)))) (<= (+ 128 ~var_1_13~0) 0)) [2023-11-06 22:19:08,720 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 49) no Hoare annotation was computed. [2023-11-06 22:19:08,720 INFO L899 garLoopResultBuilder]: For program point L45-2(lines 45 49) no Hoare annotation was computed. [2023-11-06 22:19:08,720 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (let ((.cse0 (mod ~var_1_11~0 256))) (and (<= 63 .cse0) (<= .cse0 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,720 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (and (<= 127 (mod ~var_1_10~0 256)) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0)) [2023-11-06 22:19:08,720 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 59) no Hoare annotation was computed. [2023-11-06 22:19:08,720 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-11-06 22:19:08,721 INFO L899 garLoopResultBuilder]: For program point L99-2(lines 99 105) no Hoare annotation was computed. [2023-11-06 22:19:08,721 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:19:08,721 INFO L895 garLoopResultBuilder]: At program point L99-3(lines 99 105) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,721 INFO L899 garLoopResultBuilder]: For program point L99-4(lines 99 105) no Hoare annotation was computed. [2023-11-06 22:19:08,721 INFO L895 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,722 INFO L895 garLoopResultBuilder]: At program point L62-1(line 62) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,722 INFO L899 garLoopResultBuilder]: For program point L87(lines 87 90) no Hoare annotation was computed. [2023-11-06 22:19:08,722 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,722 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,722 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-06 22:19:08,723 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:19:08,723 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,723 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,723 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-11-06 22:19:08,723 INFO L895 garLoopResultBuilder]: At program point L84(line 84) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,724 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,724 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,724 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-06 22:19:08,724 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2023-11-06 22:19:08,724 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2023-11-06 22:19:08,725 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,725 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2023-11-06 22:19:08,725 INFO L895 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: (let ((.cse0 (mod ~var_1_10~0 256)) (.cse1 (mod ~var_1_11~0 256))) (and (<= 127 .cse0) (<= 63 .cse1) (<= .cse0 254) (<= .cse1 127) (not (= (mod ~var_1_14~0 256) 0)) (<= (mod ~var_1_12~0 256) 127) (<= (+ 128 ~var_1_13~0) 0) (= ~last_1_var_1_13~0 ~var_1_13~0))) [2023-11-06 22:19:08,725 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-06 22:19:08,725 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-06 22:19:08,725 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-06 22:19:08,725 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-06 22:19:08,729 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:19:08,730 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:19:08,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:19:08 BoogieIcfgContainer [2023-11-06 22:19:08,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:19:08,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:19:08,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:19:08,749 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:19:08,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:03" (3/4) ... [2023-11-06 22:19:08,751 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:19:08,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 22:19:08,761 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-06 22:19:08,761 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:19:08,761 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:19:08,762 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:19:08,792 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((\result == 1) && (127 <= (var_1_10 % 256))) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((var_1_9 + 1) == (var_1_10 % 256))) && ((2 * (last_1_var_1_9 % 256)) == var_1_1)) && ((var_1_3 + 1) <= var_1_5)) && (last_1_var_1_13 == var_1_13)) || (((((((((((\result == 1) && (127 <= (var_1_10 % 256))) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((64 + (var_1_11 % 256)) == (var_1_9 + (var_1_12 % 256)))) && (var_1_5 <= var_1_3)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((2 * (last_1_var_1_9 % 256)) == var_1_1)) && (last_1_var_1_13 == var_1_13))) && ((128 + var_1_13) <= 0)) [2023-11-06 22:19:08,823 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((\result == 1) && (127 <= (var_1_10 % 256))) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((var_1_9 + 1) == (var_1_10 % 256))) && ((2 * (last_1_var_1_9 % 256)) == var_1_1)) && ((var_1_3 + 1) <= var_1_5)) && (last_1_var_1_13 == var_1_13)) || (((((((((((\result == 1) && (127 <= (var_1_10 % 256))) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((64 + (var_1_11 % 256)) == (var_1_9 + (var_1_12 % 256)))) && (var_1_5 <= var_1_3)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((2 * (last_1_var_1_9 % 256)) == var_1_1)) && (last_1_var_1_13 == var_1_13))) && ((128 + var_1_13) <= 0)) [2023-11-06 22:19:08,843 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:19:08,843 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:19:08,843 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:19:08,844 INFO L158 Benchmark]: Toolchain (without parser) took 186068.86ms. Allocated memory was 132.1MB in the beginning and 809.5MB in the end (delta: 677.4MB). Free memory was 86.5MB in the beginning and 303.9MB in the end (delta: -217.4MB). Peak memory consumption was 461.7MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,844 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:19:08,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.63ms. Allocated memory is still 132.1MB. Free memory was 86.5MB in the beginning and 74.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.41ms. Allocated memory is still 132.1MB. Free memory was 74.2MB in the beginning and 71.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,845 INFO L158 Benchmark]: Boogie Preprocessor took 30.77ms. Allocated memory is still 132.1MB. Free memory was 71.5MB in the beginning and 70.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,846 INFO L158 Benchmark]: RCFGBuilder took 634.99ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 69.7MB in the beginning and 141.0MB in the end (delta: -71.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,846 INFO L158 Benchmark]: TraceAbstraction took 184945.24ms. Allocated memory was 178.3MB in the beginning and 809.5MB in the end (delta: 631.2MB). Free memory was 140.0MB in the beginning and 309.2MB in the end (delta: -169.2MB). Peak memory consumption was 461.0MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,847 INFO L158 Benchmark]: Witness Printer took 94.91ms. Allocated memory is still 809.5MB. Free memory was 309.2MB in the beginning and 303.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:19:08,850 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.63ms. Allocated memory is still 132.1MB. Free memory was 86.5MB in the beginning and 74.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.41ms. Allocated memory is still 132.1MB. Free memory was 74.2MB in the beginning and 71.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.77ms. Allocated memory is still 132.1MB. Free memory was 71.5MB in the beginning and 70.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.99ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 69.7MB in the beginning and 141.0MB in the end (delta: -71.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 184945.24ms. Allocated memory was 178.3MB in the beginning and 809.5MB in the end (delta: 631.2MB). Free memory was 140.0MB in the beginning and 309.2MB in the end (delta: -169.2MB). Peak memory consumption was 461.0MB. Max. memory is 16.1GB. * Witness Printer took 94.91ms. Allocated memory is still 809.5MB. Free memory was 309.2MB in the beginning and 303.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 184.9s, OverallIterations: 5, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 811 SdHoareTripleChecker+Valid, 21.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 783 mSDsluCounter, 1442 SdHoareTripleChecker+Invalid, 20.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1085 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2077 IncrementalHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 357 mSDtfsCounter, 2077 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 733 GetRequests, 599 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 55.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 253 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 141 PreInvPairs, 162 NumberOfFragments, 776 HoareAnnotationTreeSize, 141 FomulaSimplifications, 1888 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 2340 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 151.8s InterpolantComputationTime, 643 NumberOfCodeBlocks, 643 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 637 ConstructedInterpolants, 5 QuantifiedInterpolants, 5346 SizeOfPredicates, 74 NumberOfNonLiveVariables, 1308 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 3147/3264 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: 95]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: ((((((((127 <= (var_1_10 % 256)) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((128 + var_1_13) <= 0)) && (last_1_var_1_13 == var_1_13)) - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: (((((((((((((\result == 1) && (127 <= (var_1_10 % 256))) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((var_1_9 + 1) == (var_1_10 % 256))) && ((2 * (last_1_var_1_9 % 256)) == var_1_1)) && ((var_1_3 + 1) <= var_1_5)) && (last_1_var_1_13 == var_1_13)) || (((((((((((\result == 1) && (127 <= (var_1_10 % 256))) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((64 + (var_1_11 % 256)) == (var_1_9 + (var_1_12 % 256)))) && (var_1_5 <= var_1_3)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && ((2 * (last_1_var_1_9 % 256)) == var_1_1)) && (last_1_var_1_13 == var_1_13))) && ((128 + var_1_13) <= 0)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((((127 <= (var_1_10 % 256)) && (63 <= (var_1_11 % 256))) && ((var_1_10 % 256) <= 254)) && ((var_1_11 % 256) <= 127)) && !(((var_1_14 % 256) == 0))) && ((var_1_12 % 256) <= 127)) && !((cond == 0))) && ((128 + var_1_13) <= 0)) && (last_1_var_1_13 == var_1_13)) RESULT: Ultimate proved your program to be correct! [2023-11-06 22:19:08,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d033c45f-2267-461c-a698-a03188bbad87/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