./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b12f47b6a9e6367516ff056d37b273ff79ef947ae35a3f55eb64f05e3d00fe1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:15,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:16,028 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:50:16,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:16,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:16,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:16,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:16,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:16,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:16,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:16,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:16,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:16,117 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:16,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:16,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:16,120 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:16,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:16,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:16,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:16,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:16,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:16,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:16,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:16,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:16,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:16,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:16,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:16,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:16,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:16,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:16,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:16,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:16,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:16,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:16,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:16,132 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:16,132 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:16,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:16,133 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:16,133 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_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b12f47b6a9e6367516ff056d37b273ff79ef947ae35a3f55eb64f05e3d00fe1 [2023-11-19 07:50:16,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:16,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:16,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:16,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:16,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:16,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i [2023-11-19 07:50:19,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:20,146 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:20,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i [2023-11-19 07:50:20,165 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/data/6fc8ca309/d3c1e2ebdc1d4c2bb82c036dc627f0fe/FLAG5e6c09daf [2023-11-19 07:50:20,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/data/6fc8ca309/d3c1e2ebdc1d4c2bb82c036dc627f0fe [2023-11-19 07:50:20,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:20,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:20,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:20,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:20,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:20,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344764c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20, skipping insertion in model container [2023-11-19 07:50:20,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,503 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:20,673 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_a67f8540-34cb-4917-8825-028dbc94e58e/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i[915,928] [2023-11-19 07:50:20,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:20,760 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:20,778 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_a67f8540-34cb-4917-8825-028dbc94e58e/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i[915,928] [2023-11-19 07:50:20,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:20,829 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:20,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20 WrapperNode [2023-11-19 07:50:20,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:20,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:20,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:20,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:20,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,918 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2023-11-19 07:50:20,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:20,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:20,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:20,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:20,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:20,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:20,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:20,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:20,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (1/1) ... [2023-11-19 07:50:20,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:20,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:21,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:21,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:50:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:50:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:21,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:21,154 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:21,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:21,646 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:21,670 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:21,670 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:50:21,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21 BoogieIcfgContainer [2023-11-19 07:50:21,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:21,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:21,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:21,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:21,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:20" (1/3) ... [2023-11-19 07:50:21,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44326601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:21, skipping insertion in model container [2023-11-19 07:50:21,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:20" (2/3) ... [2023-11-19 07:50:21,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44326601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:21, skipping insertion in model container [2023-11-19 07:50:21,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21" (3/3) ... [2023-11-19 07:50:21,705 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-2.i [2023-11-19 07:50:21,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:21,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:50:21,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:21,798 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d615e24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:21,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:50:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:50:21,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:21,823 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:21,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:21,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash -221231786, now seen corresponding path program 1 times [2023-11-19 07:50:21,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:21,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137774380] [2023-11-19 07:50:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:22,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137774380] [2023-11-19 07:50:22,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:50:22,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381909446] [2023-11-19 07:50:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:22,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:22,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:22,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:50:22,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-19 07:50:22,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:22,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381909446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:22,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:22,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:22,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747160905] [2023-11-19 07:50:22,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:22,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:22,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:22,598 INFO L87 Difference]: Start difference. First operand has 53 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:50:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:22,652 INFO L93 Difference]: Finished difference Result 99 states and 166 transitions. [2023-11-19 07:50:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:22,657 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 91 [2023-11-19 07:50:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:22,670 INFO L225 Difference]: With dead ends: 99 [2023-11-19 07:50:22,672 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 07:50:22,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:22,684 INFO L413 NwaCegarLoop]: 70 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, 70 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 [2023-11-19 07:50:22,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 07:50:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-19 07:50:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 70 transitions. [2023-11-19 07:50:22,767 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 70 transitions. Word has length 91 [2023-11-19 07:50:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:22,768 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 70 transitions. [2023-11-19 07:50:22,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 07:50:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 70 transitions. [2023-11-19 07:50:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:50:22,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:22,779 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:22,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:22,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:50:22,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:22,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash -226955626, now seen corresponding path program 1 times [2023-11-19 07:50:22,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:22,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420826006] [2023-11-19 07:50:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:23,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:23,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706656020] [2023-11-19 07:50:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:23,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:23,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:23,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:26,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420826006] [2023-11-19 07:50:26,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706656020] [2023-11-19 07:50:26,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706656020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:26,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526913325] [2023-11-19 07:50:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:26,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:26,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:26,408 INFO L87 Difference]: Start difference. First operand 49 states and 70 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:26,753 INFO L93 Difference]: Finished difference Result 115 states and 164 transitions. [2023-11-19 07:50:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:26,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-11-19 07:50:26,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:26,760 INFO L225 Difference]: With dead ends: 115 [2023-11-19 07:50:26,762 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 07:50:26,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:26,765 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 32 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:26,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 154 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 07:50:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2023-11-19 07:50:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2023-11-19 07:50:26,791 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 91 [2023-11-19 07:50:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:26,795 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2023-11-19 07:50:26,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2023-11-19 07:50:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:50:26,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:26,806 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:26,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:27,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:50:27,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:27,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash 453102744, now seen corresponding path program 1 times [2023-11-19 07:50:27,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:27,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918675582] [2023-11-19 07:50:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:27,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:27,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753040278] [2023-11-19 07:50:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:27,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:27,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:27,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:27,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:27,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:27,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918675582] [2023-11-19 07:50:27,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:27,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753040278] [2023-11-19 07:50:27,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753040278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:27,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:27,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:27,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146274972] [2023-11-19 07:50:27,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:27,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:27,331 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:27,376 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2023-11-19 07:50:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-11-19 07:50:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:27,379 INFO L225 Difference]: With dead ends: 122 [2023-11-19 07:50:27,379 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 07:50:27,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:27,382 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 26 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:27,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 232 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 07:50:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 49. [2023-11-19 07:50:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2023-11-19 07:50:27,393 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 91 [2023-11-19 07:50:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:27,394 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2023-11-19 07:50:27,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2023-11-19 07:50:27,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 07:50:27,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:27,396 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:27,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:27,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:27,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:27,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash -553647896, now seen corresponding path program 1 times [2023-11-19 07:50:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:27,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239307107] [2023-11-19 07:50:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:27,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250578425] [2023-11-19 07:50:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:27,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:27,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:50:27,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 54 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-19 07:50:28,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:33,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239307107] [2023-11-19 07:50:33,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250578425] [2023-11-19 07:50:33,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250578425] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:33,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:33,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 18 [2023-11-19 07:50:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984604147] [2023-11-19 07:50:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:33,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:50:33,429 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:34,024 INFO L93 Difference]: Finished difference Result 133 states and 179 transitions. [2023-11-19 07:50:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:50:34,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 93 [2023-11-19 07:50:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:34,027 INFO L225 Difference]: With dead ends: 133 [2023-11-19 07:50:34,027 INFO L226 Difference]: Without dead ends: 131 [2023-11-19 07:50:34,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:50:34,029 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 89 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:34,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 556 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:50:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-19 07:50:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 75. [2023-11-19 07:50:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 57 states have internal predecessors, (68), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2023-11-19 07:50:34,044 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 93 [2023-11-19 07:50:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:34,045 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2023-11-19 07:50:34,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2023-11-19 07:50:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:50:34,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:34,047 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:34,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:34,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:34,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:34,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1698416293, now seen corresponding path program 1 times [2023-11-19 07:50:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561759053] [2023-11-19 07:50:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:34,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:34,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302240606] [2023-11-19 07:50:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:34,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:34,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:34,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:50:34,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 85 proven. 93 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:50:35,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:35,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561759053] [2023-11-19 07:50:35,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302240606] [2023-11-19 07:50:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302240606] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:35,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:35,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2023-11-19 07:50:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15299039] [2023-11-19 07:50:35,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:35,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:50:35,894 INFO L87 Difference]: Start difference. First operand 75 states and 100 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:37,410 INFO L93 Difference]: Finished difference Result 186 states and 241 transitions. [2023-11-19 07:50:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:50:37,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2023-11-19 07:50:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:37,416 INFO L225 Difference]: With dead ends: 186 [2023-11-19 07:50:37,416 INFO L226 Difference]: Without dead ends: 184 [2023-11-19 07:50:37,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 07:50:37,418 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 109 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:37,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 667 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:50:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-19 07:50:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 76. [2023-11-19 07:50:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 58 states have internal predecessors, (70), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2023-11-19 07:50:37,437 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 94 [2023-11-19 07:50:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:37,438 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2023-11-19 07:50:37,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2023-11-19 07:50:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-19 07:50:37,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:37,441 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:37,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:37,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:37,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:37,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1024894035, now seen corresponding path program 1 times [2023-11-19 07:50:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:37,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259490189] [2023-11-19 07:50:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:37,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:37,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289384093] [2023-11-19 07:50:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:37,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:37,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:37,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:37,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:37,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:37,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:37,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:37,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259490189] [2023-11-19 07:50:37,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289384093] [2023-11-19 07:50:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289384093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512809146] [2023-11-19 07:50:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:37,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:37,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:37,873 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:37,943 INFO L93 Difference]: Finished difference Result 178 states and 233 transitions. [2023-11-19 07:50:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-11-19 07:50:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:37,946 INFO L225 Difference]: With dead ends: 178 [2023-11-19 07:50:37,946 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:50:37,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:37,949 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:37,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 121 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:50:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 76. [2023-11-19 07:50:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2023-11-19 07:50:37,965 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 95 [2023-11-19 07:50:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:37,966 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2023-11-19 07:50:37,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2023-11-19 07:50:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-19 07:50:37,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:37,969 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:37,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:38,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:38,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:38,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:38,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2086223154, now seen corresponding path program 1 times [2023-11-19 07:50:38,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:38,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624259586] [2023-11-19 07:50:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:38,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:38,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:38,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511605253] [2023-11-19 07:50:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:38,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:38,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:38,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:38,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:50:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:38,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:38,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624259586] [2023-11-19 07:50:38,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:38,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511605253] [2023-11-19 07:50:38,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511605253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:38,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:38,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573566391] [2023-11-19 07:50:38,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:38,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:38,424 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:38,490 INFO L93 Difference]: Finished difference Result 163 states and 213 transitions. [2023-11-19 07:50:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-11-19 07:50:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:38,494 INFO L225 Difference]: With dead ends: 163 [2023-11-19 07:50:38,494 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 07:50:38,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:38,496 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 27 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:38,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 07:50:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2023-11-19 07:50:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-11-19 07:50:38,510 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 95 [2023-11-19 07:50:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:38,511 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-11-19 07:50:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-19 07:50:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 07:50:38,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:38,514 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:38,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:38,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:50:38,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:38,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:38,729 INFO L85 PathProgramCache]: Analyzing trace with hash -655934445, now seen corresponding path program 1 times [2023-11-19 07:50:38,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:38,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603830318] [2023-11-19 07:50:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:38,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:38,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:38,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127193264] [2023-11-19 07:50:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:38,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:38,757 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:38,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:50:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:50:38,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:39,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603830318] [2023-11-19 07:50:39,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127193264] [2023-11-19 07:50:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127193264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:50:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793441140] [2023-11-19 07:50:39,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:39,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:39,458 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:39,901 INFO L93 Difference]: Finished difference Result 139 states and 185 transitions. [2023-11-19 07:50:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:39,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2023-11-19 07:50:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:39,905 INFO L225 Difference]: With dead ends: 139 [2023-11-19 07:50:39,905 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 07:50:39,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:50:39,906 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 67 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:39,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 606 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 07:50:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 68. [2023-11-19 07:50:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2023-11-19 07:50:39,932 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 97 [2023-11-19 07:50:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:39,934 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2023-11-19 07:50:39,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2023-11-19 07:50:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:50:39,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:39,936 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:39,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:40,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:50:40,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:40,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1615526147, now seen corresponding path program 1 times [2023-11-19 07:50:40,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684859904] [2023-11-19 07:50:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:40,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:40,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:40,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229131524] [2023-11-19 07:50:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:40,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:40,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:40,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:40,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:50:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:40,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:50:40,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:40,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:40,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:40,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684859904] [2023-11-19 07:50:40,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:40,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229131524] [2023-11-19 07:50:40,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229131524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:40,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:40,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:50:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894855573] [2023-11-19 07:50:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:40,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:40,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:40,677 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:41,097 INFO L93 Difference]: Finished difference Result 141 states and 188 transitions. [2023-11-19 07:50:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:50:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2023-11-19 07:50:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:41,099 INFO L225 Difference]: With dead ends: 141 [2023-11-19 07:50:41,100 INFO L226 Difference]: Without dead ends: 139 [2023-11-19 07:50:41,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:50:41,101 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 86 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:41,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 617 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-19 07:50:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 67. [2023-11-19 07:50:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2023-11-19 07:50:41,114 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 98 [2023-11-19 07:50:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:41,114 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2023-11-19 07:50:41,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2023-11-19 07:50:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:50:41,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:41,116 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:41,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 07:50:41,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:50:41,325 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:41,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1212116922, now seen corresponding path program 1 times [2023-11-19 07:50:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542120293] [2023-11-19 07:50:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:41,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:41,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608260537] [2023-11-19 07:50:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:41,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:41,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:41,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:50:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:41,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:50:41,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-19 07:50:42,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:43,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542120293] [2023-11-19 07:50:43,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608260537] [2023-11-19 07:50:43,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608260537] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:43,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:43,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 23 [2023-11-19 07:50:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694784242] [2023-11-19 07:50:43,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:50:43,215 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:44,771 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2023-11-19 07:50:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 07:50:44,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2023-11-19 07:50:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:44,777 INFO L225 Difference]: With dead ends: 195 [2023-11-19 07:50:44,777 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 07:50:44,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:50:44,779 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 100 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:44,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 953 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:50:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 07:50:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 69. [2023-11-19 07:50:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2023-11-19 07:50:44,811 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 98 [2023-11-19 07:50:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:44,811 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2023-11-19 07:50:44,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2023-11-19 07:50:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:50:44,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:44,814 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:44,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:45,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:50:45,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:45,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1913181500, now seen corresponding path program 1 times [2023-11-19 07:50:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710492033] [2023-11-19 07:50:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:45,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:45,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056793816] [2023-11-19 07:50:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:45,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:45,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:45,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:45,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:50:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:45,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:50:45,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-19 07:50:45,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-19 07:50:46,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:46,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710492033] [2023-11-19 07:50:46,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:46,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056793816] [2023-11-19 07:50:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056793816] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:46,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:46,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 23 [2023-11-19 07:50:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043977766] [2023-11-19 07:50:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:50:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:50:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:50:46,465 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:47,548 INFO L93 Difference]: Finished difference Result 173 states and 220 transitions. [2023-11-19 07:50:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:50:47,548 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2023-11-19 07:50:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:47,550 INFO L225 Difference]: With dead ends: 173 [2023-11-19 07:50:47,550 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 07:50:47,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:50:47,552 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 89 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:47,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1030 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:50:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 07:50:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 69. [2023-11-19 07:50:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2023-11-19 07:50:47,590 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 98 [2023-11-19 07:50:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:47,591 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2023-11-19 07:50:47,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 07:50:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2023-11-19 07:50:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:50:47,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:47,593 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:47,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:47,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:50:47,809 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:47,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1387048758, now seen corresponding path program 1 times [2023-11-19 07:50:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:47,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759829813] [2023-11-19 07:50:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:47,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:47,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240025870] [2023-11-19 07:50:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:47,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:47,832 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:50:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:47,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:50:47,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 105 proven. 33 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-19 07:50:48,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-19 07:50:48,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759829813] [2023-11-19 07:50:48,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240025870] [2023-11-19 07:50:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240025870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:48,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:48,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:50:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684668062] [2023-11-19 07:50:48,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:48,255 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-19 07:50:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:48,474 INFO L93 Difference]: Finished difference Result 129 states and 169 transitions. [2023-11-19 07:50:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 99 [2023-11-19 07:50:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:48,478 INFO L225 Difference]: With dead ends: 129 [2023-11-19 07:50:48,479 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:50:48,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:48,480 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:48,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 102 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:50:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:50:48,482 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) [2023-11-19 07:50:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:50:48,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2023-11-19 07:50:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:48,483 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:50:48,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-19 07:50:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:50:48,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:50:48,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:50:48,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:48,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:50:50,473 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-19 07:50:50,474 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 07:50:50,474 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-19 07:50:50,474 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,474 INFO L895 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,474 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 94 105) no Hoare annotation was computed. [2023-11-19 07:50:50,474 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-19 07:50:50,474 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 62) no Hoare annotation was computed. [2023-11-19 07:50:50,475 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:50:50,475 INFO L899 garLoopResultBuilder]: For program point L86(lines 86 89) no Hoare annotation was computed. [2023-11-19 07:50:50,475 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-19 07:50:50,475 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2023-11-19 07:50:50,475 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 36 62) no Hoare annotation was computed. [2023-11-19 07:50:50,475 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2023-11-19 07:50:50,476 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:50:50,476 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,476 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,476 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,476 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,476 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-19 07:50:50,476 INFO L895 garLoopResultBuilder]: At program point L97-2(lines 97 103) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,476 INFO L899 garLoopResultBuilder]: For program point L97-3(lines 97 103) no Hoare annotation was computed. [2023-11-19 07:50:50,476 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-19 07:50:50,477 INFO L899 garLoopResultBuilder]: For program point L40(lines 36 62) no Hoare annotation was computed. [2023-11-19 07:50:50,477 INFO L895 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,477 INFO L895 garLoopResultBuilder]: At program point L65-1(line 65) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,477 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:50:50,477 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 07:50:50,477 INFO L899 garLoopResultBuilder]: For program point property_returnLabel#1(lines 90 93) no Hoare annotation was computed. [2023-11-19 07:50:50,477 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,477 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,478 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-11-19 07:50:50,478 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 49) no Hoare annotation was computed. [2023-11-19 07:50:50,478 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-11-19 07:50:50,478 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:50:50,478 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-11-19 07:50:50,478 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L91-2(line 91) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L91-4(line 91) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L91-6(line 91) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L91-8(line 91) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2023-11-19 07:50:50,479 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2023-11-19 07:50:50,480 INFO L899 garLoopResultBuilder]: For program point L84(lines 63 85) no Hoare annotation was computed. [2023-11-19 07:50:50,480 INFO L902 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: true [2023-11-19 07:50:50,480 INFO L895 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: (<= 32767 (mod ~var_1_6~0 65536)) [2023-11-19 07:50:50,480 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-19 07:50:50,480 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-19 07:50:50,480 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-19 07:50:50,481 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-19 07:50:50,484 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:50,487 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:50:50,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:50:50 BoogieIcfgContainer [2023-11-19 07:50:50,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:50:50,500 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:50:50,500 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:50:50,501 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:50:50,501 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21" (3/4) ... [2023-11-19 07:50:50,503 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:50:50,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 07:50:50,514 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 07:50:50,515 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:50:50,515 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:50:50,516 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:50:50,655 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:50:50,656 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:50:50,656 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:50:50,657 INFO L158 Benchmark]: Toolchain (without parser) took 30199.38ms. Allocated memory was 146.8MB in the beginning and 373.3MB in the end (delta: 226.5MB). Free memory was 113.4MB in the beginning and 219.0MB in the end (delta: -105.7MB). Peak memory consumption was 122.2MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,657 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 100.7MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:50:50,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.42ms. Allocated memory is still 146.8MB. Free memory was 113.4MB in the beginning and 100.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.01ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 97.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,659 INFO L158 Benchmark]: Boogie Preprocessor took 38.89ms. Allocated memory is still 146.8MB. Free memory was 97.3MB in the beginning and 95.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,659 INFO L158 Benchmark]: RCFGBuilder took 713.85ms. Allocated memory is still 146.8MB. Free memory was 95.5MB in the beginning and 77.0MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,660 INFO L158 Benchmark]: TraceAbstraction took 28815.76ms. Allocated memory was 146.8MB in the beginning and 373.3MB in the end (delta: 226.5MB). Free memory was 76.3MB in the beginning and 224.3MB in the end (delta: -148.0MB). Peak memory consumption was 184.1MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,660 INFO L158 Benchmark]: Witness Printer took 155.58ms. Allocated memory is still 373.3MB. Free memory was 224.3MB in the beginning and 219.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:50:50,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 100.7MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.42ms. Allocated memory is still 146.8MB. Free memory was 113.4MB in the beginning and 100.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.01ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 97.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.89ms. Allocated memory is still 146.8MB. Free memory was 97.3MB in the beginning and 95.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 713.85ms. Allocated memory is still 146.8MB. Free memory was 95.5MB in the beginning and 77.0MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 28815.76ms. Allocated memory was 146.8MB in the beginning and 373.3MB in the end (delta: 226.5MB). Free memory was 76.3MB in the beginning and 224.3MB in the end (delta: -148.0MB). Peak memory consumption was 184.1MB. Max. memory is 16.1GB. * Witness Printer took 155.58ms. Allocated memory is still 373.3MB. Free memory was 224.3MB in the beginning and 219.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.7s, OverallIterations: 12, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 771 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 697 mSDsluCounter, 5219 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4084 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2649 IncrementalHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 1135 mSDtfsCounter, 2649 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1683 GetRequests, 1506 SyntacticMatches, 2 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=5, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 619 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 117 PreInvPairs, 132 NumberOfFragments, 72 HoareAnnotationTreeSize, 117 FomulaSimplifications, 1767154 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 16 FomulaSimplificationsInter, 318180 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 1231 NumberOfCodeBlocks, 1231 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1605 ConstructedInterpolants, 0 QuantifiedInterpolants, 6213 SizeOfPredicates, 110 NumberOfNonLiveVariables, 2776 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 5897/6188 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: 97]: Loop Invariant Derived loop invariant: (32767 <= (var_1_6 % 65536)) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:50:50,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67f8540-34cb-4917-8825-028dbc94e58e/bin/uautomizer-verify-uCwYo4JHxu/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