./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c --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_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/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_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/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_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/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 13f01b13f842e70fa5dc0726b8b5b83cfbe12eb21a3c45812a2355ca865a56c3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:34,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:35,040 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:35,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:35,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:35,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:35,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:35,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:35,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:35,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:35,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:35,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:35,100 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:35,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:35,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:35,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:35,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:35,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:35,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:35,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:35,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:35,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:35,106 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:35,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:35,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:35,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:35,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:35,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:35,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:35,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:35,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:35,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:35,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:35,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:35,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:35,132 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:35,132 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:35,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:35,133 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:35,133 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_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f01b13f842e70fa5dc0726b8b5b83cfbe12eb21a3c45812a2355ca865a56c3 [2023-11-19 07:38:35,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:35,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:35,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:35,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:35,493 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:35,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c [2023-11-19 07:38:38,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:38,985 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:38,985 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c [2023-11-19 07:38:38,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/data/1b83eab9b/f1d72a2eb1d84b279196189329473a50/FLAGe0a7a603f [2023-11-19 07:38:39,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/data/1b83eab9b/f1d72a2eb1d84b279196189329473a50 [2023-11-19 07:38:39,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:39,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:39,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:39,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:39,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:39,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16948e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39, skipping insertion in model container [2023-11-19 07:38:39,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:39,255 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_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2023-11-19 07:38:39,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:39,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:39,302 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_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2023-11-19 07:38:39,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:39,327 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:39,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39 WrapperNode [2023-11-19 07:38:39,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:39,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:39,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:39,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:39,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,366 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-11-19 07:38:39,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:39,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:39,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:39,367 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:39,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:39,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:39,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:39,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:39,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (1/1) ... [2023-11-19 07:38:39,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:39,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:39,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:39,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:38:39,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:38:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:38:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:38:39,582 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:39,584 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:39,743 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:39,752 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:39,752 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:39,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:39 BoogieIcfgContainer [2023-11-19 07:38:39,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:39,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:39,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:39,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:39,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:39" (1/3) ... [2023-11-19 07:38:39,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4732c1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:39, skipping insertion in model container [2023-11-19 07:38:39,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:39" (2/3) ... [2023-11-19 07:38:39,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4732c1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:39, skipping insertion in model container [2023-11-19 07:38:39,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:39" (3/3) ... [2023-11-19 07:38:39,768 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound100.c [2023-11-19 07:38:39,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:39,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:38:39,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:39,861 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;@7c403417, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:39,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:38:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:38:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:38:39,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:39,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:39,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:39,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2023-11-19 07:38:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931901280] [2023-11-19 07:38:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:39,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:40,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931901280] [2023-11-19 07:38:40,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:38:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466766906] [2023-11-19 07:38:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:40,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:40,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:38:40,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:38:40,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:40,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466766906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:40,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:40,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:40,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128401056] [2023-11-19 07:38:40,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:40,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:40,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:40,388 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:38:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:40,422 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2023-11-19 07:38:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-19 07:38:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:40,437 INFO L225 Difference]: With dead ends: 51 [2023-11-19 07:38:40,437 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 07:38:40,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 07:38:40,447 INFO L413 NwaCegarLoop]: 30 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, 30 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 07:38:40,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:40,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 07:38:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 07:38:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:38:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-19 07:38:40,491 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2023-11-19 07:38:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:40,491 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-19 07:38:40,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:38:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-19 07:38:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:38:40,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:40,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:40,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:40,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:38:40,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:40,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2023-11-19 07:38:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424577] [2023-11-19 07:38:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:40,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:40,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152150197] [2023-11-19 07:38:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:40,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:40,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:38:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:38:40,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:38:41,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:41,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:41,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424577] [2023-11-19 07:38:41,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152150197] [2023-11-19 07:38:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152150197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:41,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:38:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347558748] [2023-11-19 07:38:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:41,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:41,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:41,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:41,101 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:41,229 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-11-19 07:38:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:41,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-19 07:38:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:41,232 INFO L225 Difference]: With dead ends: 35 [2023-11-19 07:38:41,232 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 07:38:41,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:41,235 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:41,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 78 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:38:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 07:38:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-11-19 07:38:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:38:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-19 07:38:41,255 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2023-11-19 07:38:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:41,257 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-19 07:38:41,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-19 07:38:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:38:41,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:41,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:41,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:41,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:41,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:41,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2023-11-19 07:38:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093063307] [2023-11-19 07:38:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:41,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:41,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922633621] [2023-11-19 07:38:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:41,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:41,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:41,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:38:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:38:41,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:38:41,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093063307] [2023-11-19 07:38:41,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922633621] [2023-11-19 07:38:41,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922633621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:41,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:41,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-19 07:38:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112479137] [2023-11-19 07:38:41,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:38:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:38:41,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:38:41,972 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:38:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:42,330 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-11-19 07:38:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:38:42,331 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2023-11-19 07:38:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:42,334 INFO L225 Difference]: With dead ends: 44 [2023-11-19 07:38:42,334 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 07:38:42,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:38:42,341 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:42,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 07:38:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-19 07:38:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:38:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-11-19 07:38:42,374 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2023-11-19 07:38:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:42,375 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-11-19 07:38:42,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:38:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-11-19 07:38:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:38:42,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:42,381 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:42,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:42,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:42,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2023-11-19 07:38:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339525552] [2023-11-19 07:38:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:42,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865573409] [2023-11-19 07:38:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:42,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:42,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:38:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-19 07:38:42,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:38:43,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:44,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:44,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339525552] [2023-11-19 07:38:44,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865573409] [2023-11-19 07:38:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865573409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:44,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:44,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2023-11-19 07:38:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125539582] [2023-11-19 07:38:44,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:44,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 07:38:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:38:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:38:44,099 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:38:50,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:38:52,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:38:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:52,613 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-11-19 07:38:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:38:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2023-11-19 07:38:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:52,615 INFO L225 Difference]: With dead ends: 55 [2023-11-19 07:38:52,615 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 07:38:52,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 07:38:52,617 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 39 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:52,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 155 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 354 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-11-19 07:38:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 07:38:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-11-19 07:38:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 07:38:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-19 07:38:52,632 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 35 [2023-11-19 07:38:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:52,633 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-19 07:38:52,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:38:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-19 07:38:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:38:52,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:52,635 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:52,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:52,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:52,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:52,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash 546586445, now seen corresponding path program 1 times [2023-11-19 07:38:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228095455] [2023-11-19 07:38:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:52,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:52,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037214633] [2023-11-19 07:38:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:52,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:52,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:52,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:52,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:38:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:52,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:38:52,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 07:38:53,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 07:38:53,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228095455] [2023-11-19 07:38:53,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:53,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037214633] [2023-11-19 07:38:53,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037214633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:53,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:53,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-11-19 07:38:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400297173] [2023-11-19 07:38:53,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:53,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:38:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:53,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:38:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:38:53,301 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 07:38:53,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:53,532 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2023-11-19 07:38:53,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:38:53,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2023-11-19 07:38:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:53,536 INFO L225 Difference]: With dead ends: 57 [2023-11-19 07:38:53,536 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:38:53,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:38:53,538 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:53,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 143 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:38:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2023-11-19 07:38:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:38:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2023-11-19 07:38:53,580 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2023-11-19 07:38:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:53,580 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2023-11-19 07:38:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 07:38:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2023-11-19 07:38:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:38:53,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:53,582 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:53,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:53,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:53,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:53,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1465806458, now seen corresponding path program 1 times [2023-11-19 07:38:53,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:53,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571397079] [2023-11-19 07:38:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:53,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552238672] [2023-11-19 07:38:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:53,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:53,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:53,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:38:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:53,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:38:53,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-19 07:38:54,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-19 07:38:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:55,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571397079] [2023-11-19 07:38:55,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552238672] [2023-11-19 07:38:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552238672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:55,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:55,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-19 07:38:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577433344] [2023-11-19 07:38:55,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:55,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 07:38:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 07:38:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:38:55,153 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 21 states have internal predecessors, (48), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-19 07:38:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:57,010 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2023-11-19 07:38:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:38:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 21 states have internal predecessors, (48), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 53 [2023-11-19 07:38:57,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:57,015 INFO L225 Difference]: With dead ends: 97 [2023-11-19 07:38:57,015 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 07:38:57,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 07:38:57,017 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:57,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 231 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:38:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 07:38:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 62. [2023-11-19 07:38:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:38:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2023-11-19 07:38:57,056 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 53 [2023-11-19 07:38:57,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:57,057 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2023-11-19 07:38:57,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.526315789473684) internal successors, (48), 21 states have internal predecessors, (48), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-19 07:38:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2023-11-19 07:38:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:38:57,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:57,064 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:57,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:57,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:38:57,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:57,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 2 times [2023-11-19 07:38:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945867783] [2023-11-19 07:38:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:57,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:57,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:57,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819001299] [2023-11-19 07:38:57,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:38:57,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:57,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:57,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:57,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:38:57,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:38:57,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:57,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:38:57,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:38:57,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:38:57,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:57,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945867783] [2023-11-19 07:38:57,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:57,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819001299] [2023-11-19 07:38:57,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819001299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:57,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:57,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-19 07:38:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889937863] [2023-11-19 07:38:57,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:57,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:57,486 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 07:38:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:57,613 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2023-11-19 07:38:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 53 [2023-11-19 07:38:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:57,615 INFO L225 Difference]: With dead ends: 102 [2023-11-19 07:38:57,616 INFO L226 Difference]: Without dead ends: 83 [2023-11-19 07:38:57,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:57,617 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:57,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 109 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:38:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-19 07:38:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2023-11-19 07:38:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:38:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2023-11-19 07:38:57,655 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 53 [2023-11-19 07:38:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:57,655 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2023-11-19 07:38:57,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 07:38:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2023-11-19 07:38:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:38:57,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:57,657 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:57,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:38:57,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:57,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1191046844, now seen corresponding path program 3 times [2023-11-19 07:38:57,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:57,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483674936] [2023-11-19 07:38:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:57,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:57,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:57,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552615126] [2023-11-19 07:38:57,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:38:57,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:57,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:57,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:57,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:38:57,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:38:57,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:57,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-19 07:38:57,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:38:58,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:39:08,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483674936] [2023-11-19 07:39:08,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552615126] [2023-11-19 07:39:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552615126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:08,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2023-11-19 07:39:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961959533] [2023-11-19 07:39:08,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:08,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:39:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:39:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=546, Unknown=4, NotChecked=0, Total=650 [2023-11-19 07:39:08,954 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 26 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:39:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:11,757 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2023-11-19 07:39:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:39:11,758 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 53 [2023-11-19 07:39:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:11,759 INFO L225 Difference]: With dead ends: 87 [2023-11-19 07:39:11,759 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:39:11,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=249, Invalid=1153, Unknown=4, NotChecked=0, Total=1406 [2023-11-19 07:39:11,762 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:11,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 151 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:39:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:39:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:39:11,763 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 07:39:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:39:11,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2023-11-19 07:39:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:11,764 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:39:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:39:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:39:11,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:39:11,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:39:11,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 07:39:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:39:11,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:39:16,500 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:39:16,500 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 100) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2023-11-19 07:39:16,500 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-11-19 07:39:16,500 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-11-19 07:39:16,500 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-19 07:39:16,501 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse5 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse3 (= |ULTIMATE.start_main_~xy~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~y~0#1| 0))) (or (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse2 .cse1)) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ .cse0 .cse2 .cse1)) (<= |ULTIMATE.start_main_~X~0#1| 100) (<= 0 |ULTIMATE.start_main_~X~0#1|))) (and .cse3 .cse4 (= .cse1 .cse5) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)) (and (= |ULTIMATE.start_main_~yx~0#1| |ULTIMATE.start_main_~Y~0#1|) (= (* |ULTIMATE.start_main_~Y~0#1| 4) .cse5) .cse3 (= |ULTIMATE.start_main_~x~0#1| 1) .cse4))) [2023-11-19 07:39:16,501 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-11-19 07:39:16,501 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:39:16,501 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 21 53) no Hoare annotation was computed. [2023-11-19 07:39:16,501 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2023-11-19 07:39:16,501 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2023-11-19 07:39:16,504 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:39:16,506 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse1 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse2 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse0 (+ .cse1 .cse2))) (and (<= |ULTIMATE.start_main_~Y~0#1| 100) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) .cse0) (or (forall ((|ULTIMATE.start_main_~y~0#1| Int)) (or (not (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) .cse0)) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2)))) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~X~0#1| 1))) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 100) (<= 0 |ULTIMATE.start_main_~X~0#1|)))) [2023-11-19 07:39:16,507 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2023-11-19 07:39:16,507 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:39:16,515 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse0 (+ .cse2 .cse1))) (and (<= |ULTIMATE.start_main_~Y~0#1| 100) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) .cse0) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (or (forall ((v_subst_2 Int)) (or (not (= (+ (* 2 (* |ULTIMATE.start_main_~X~0#1| v_subst_2)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) .cse0)) (= (+ .cse2 (* 2 v_subst_2) .cse1) (+ (* (* |ULTIMATE.start_main_~x~0#1| v_subst_2) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~X~0#1| 1))) (<= |ULTIMATE.start_main_~X~0#1| 100) (<= 0 |ULTIMATE.start_main_~X~0#1|)))) [2023-11-19 07:39:16,515 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2023-11-19 07:39:16,515 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-11-19 07:39:16,515 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2023-11-19 07:39:16,516 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 19) the Hoare annotation is: true [2023-11-19 07:39:16,516 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-11-19 07:39:16,520 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2023-11-19 07:39:16,522 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:39:16,539 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall ULTIMATE.start_main_~y~0#1 : int :: !(~X~0 * ULTIMATE.start_main_~y~0#1 * 2 + ~X~0 + ~v~0 == ~Y~0 * ~x~0 * 2 + 2 * ~Y~0) || ~X~0 + ~v~0 + 2 * (~x~0 * ULTIMATE.start_main_~y~0#1) == 2 * ULTIMATE.start_main_~y~0#1 + ~Y~0 * ~x~0 * 2 + 2 * ~Y~0) could not be translated [2023-11-19 07:39:16,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:39:16 BoogieIcfgContainer [2023-11-19 07:39:16,542 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:39:16,542 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:39:16,542 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:39:16,543 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:39:16,543 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:39" (3/4) ... [2023-11-19 07:39:16,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:39:16,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 07:39:16,552 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 07:39:16,557 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 07:39:16,557 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:39:16,558 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:39:16,558 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:39:16,651 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:39:16,652 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:39:16,652 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:39:16,652 INFO L158 Benchmark]: Toolchain (without parser) took 37622.98ms. Allocated memory was 130.0MB in the beginning and 203.4MB in the end (delta: 73.4MB). Free memory was 85.0MB in the beginning and 95.6MB in the end (delta: -10.6MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:16,653 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:16,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.22ms. Allocated memory is still 130.0MB. Free memory was 84.6MB in the beginning and 73.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:39:16,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.17ms. Allocated memory is still 130.0MB. Free memory was 73.9MB in the beginning and 72.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:16,654 INFO L158 Benchmark]: Boogie Preprocessor took 55.18ms. Allocated memory is still 130.0MB. Free memory was 72.7MB in the beginning and 71.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:16,655 INFO L158 Benchmark]: RCFGBuilder took 333.84ms. Allocated memory is still 130.0MB. Free memory was 71.4MB in the beginning and 60.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:39:16,655 INFO L158 Benchmark]: TraceAbstraction took 36782.02ms. Allocated memory was 130.0MB in the beginning and 203.4MB in the end (delta: 73.4MB). Free memory was 59.7MB in the beginning and 100.8MB in the end (delta: -41.2MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:16,656 INFO L158 Benchmark]: Witness Printer took 109.59ms. Allocated memory is still 203.4MB. Free memory was 100.8MB in the beginning and 95.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:39:16,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.22ms. Allocated memory is still 130.0MB. Free memory was 84.6MB in the beginning and 73.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.17ms. Allocated memory is still 130.0MB. Free memory was 73.9MB in the beginning and 72.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.18ms. Allocated memory is still 130.0MB. Free memory was 72.7MB in the beginning and 71.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.84ms. Allocated memory is still 130.0MB. Free memory was 71.4MB in the beginning and 60.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 36782.02ms. Allocated memory was 130.0MB in the beginning and 203.4MB in the end (delta: 73.4MB). Free memory was 59.7MB in the beginning and 100.8MB in the end (delta: -41.2MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. * Witness Printer took 109.59ms. Allocated memory is still 203.4MB. Free memory was 100.8MB in the beginning and 95.6MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall ULTIMATE.start_main_~y~0#1 : int :: !(~X~0 * ULTIMATE.start_main_~y~0#1 * 2 + ~X~0 + ~v~0 == ~Y~0 * ~x~0 * 2 + 2 * ~Y~0) || ~X~0 + ~v~0 + 2 * (~x~0 * ULTIMATE.start_main_~y~0#1) == 2 * ULTIMATE.start_main_~y~0#1 + ~Y~0 * ~x~0 * 2 + 2 * ~Y~0) could not be translated * 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: 16]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 1015 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 861 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1441 IncrementalHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 154 mSDtfsCounter, 1441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 611 GetRequests, 456 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 18.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=7, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 42 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 33 PreInvPairs, 66 NumberOfFragments, 286 HoareAnnotationTreeSize, 33 FomulaSimplifications, 5545 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3836 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 323 NumberOfCodeBlocks, 305 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 556 ConstructedInterpolants, 4 QuantifiedInterpolants, 2969 SizeOfPredicates, 40 NumberOfNonLiveVariables, 797 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 375/480 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: 32]: Loop Invariant Derived loop invariant: (((((Y <= 100) && (((((X * y) * 2) + X) + v) == (((Y * x) * 2) + (2 * Y)))) && (0 <= Y)) && (X <= 100)) && (0 <= X)) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:39:16,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a464f9c-2ba0-48dd-8b46-a2747eb402f9/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