./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/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_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/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_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/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 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:34,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:34,655 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:34:34,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:34,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:34,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:34,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:34,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:34,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:34,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:34,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:34,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:34,704 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:34,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:34,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:34:34,705 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:34,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:34,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:34,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:34,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:34:34,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:34,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:34:34,709 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:34,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:34:34,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:34,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:34,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:34,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:34,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:34,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:34,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:34,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:34:34,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:34,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:34,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:34,715 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:34:34,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:34,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:34,716 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:34,716 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_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 [2023-11-19 07:34:34,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:35,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:35,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:35,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:35,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:35,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2023-11-19 07:34:37,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:38,183 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:38,184 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2023-11-19 07:34:38,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/data/aa25b7356/6a15950b029d43a8bd2ba9853aa67ab5/FLAGd3ddd1497 [2023-11-19 07:34:38,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/data/aa25b7356/6a15950b029d43a8bd2ba9853aa67ab5 [2023-11-19 07:34:38,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:38,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:38,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:38,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:38,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:38,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3040809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38, skipping insertion in model container [2023-11-19 07:34:38,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:38,442 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_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2023-11-19 07:34:38,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:38,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:38,482 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_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2023-11-19 07:34:38,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:38,503 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:38,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38 WrapperNode [2023-11-19 07:34:38,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:38,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:38,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:38,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:38,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,534 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-11-19 07:34:38,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:38,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:38,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:38,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:38,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:38,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:38,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:38,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:38,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (1/1) ... [2023-11-19 07:34:38,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:38,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:38,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:38,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:34:38,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:34:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:34:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:34:38,741 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:38,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:39,054 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:39,062 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:39,063 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:34:39,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:39 BoogieIcfgContainer [2023-11-19 07:34:39,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:39,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:39,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:39,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:39,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:38" (1/3) ... [2023-11-19 07:34:39,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f84cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:39, skipping insertion in model container [2023-11-19 07:34:39,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:38" (2/3) ... [2023-11-19 07:34:39,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f84cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:39, skipping insertion in model container [2023-11-19 07:34:39,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:39" (3/3) ... [2023-11-19 07:34:39,082 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2023-11-19 07:34:39,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:39,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:34:39,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:39,176 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;@65a2c2b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:39,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:34:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:34:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:34:39,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:39,191 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:39,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:39,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash 887431403, now seen corresponding path program 1 times [2023-11-19 07:34:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160541255] [2023-11-19 07:34:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160541255] [2023-11-19 07:34:39,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:34:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858066040] [2023-11-19 07:34:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:39,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:39,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:39,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:39,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:34:39,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 07:34:39,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858066040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:39,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:39,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:39,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430445333] [2023-11-19 07:34:39,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:39,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:34:39,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:34:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:34:39,626 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:34:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:39,655 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2023-11-19 07:34:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:34:39,658 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-11-19 07:34:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:39,667 INFO L225 Difference]: With dead ends: 55 [2023-11-19 07:34:39,668 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 07:34:39,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 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 07:34:39,679 INFO L413 NwaCegarLoop]: 36 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, 36 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 07:34:39,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 07:34:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-19 07:34:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:34:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-11-19 07:34:39,742 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 39 [2023-11-19 07:34:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:39,743 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-11-19 07:34:39,743 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:34:39,743 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-11-19 07:34:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:34:39,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:39,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:39,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:39,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:39,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:39,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash -722599373, now seen corresponding path program 1 times [2023-11-19 07:34:39,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:39,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170898888] [2023-11-19 07:34:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:39,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182662456] [2023-11-19 07:34:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:39,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:39,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:39,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:40,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:34:40,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:34:40,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:40,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170898888] [2023-11-19 07:34:40,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182662456] [2023-11-19 07:34:40,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182662456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:40,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:40,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355239458] [2023-11-19 07:34:40,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:40,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:40,294 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 07:34:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:40,432 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2023-11-19 07:34:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-11-19 07:34:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:40,435 INFO L225 Difference]: With dead ends: 36 [2023-11-19 07:34:40,435 INFO L226 Difference]: Without dead ends: 33 [2023-11-19 07:34:40,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:40,437 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:40,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 96 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-19 07:34:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-11-19 07:34:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:34:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-11-19 07:34:40,449 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 39 [2023-11-19 07:34:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:40,450 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-11-19 07:34:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 07:34:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-11-19 07:34:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:34:40,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:40,453 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:40,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:40,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:40,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:40,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1459116230, now seen corresponding path program 1 times [2023-11-19 07:34:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455106811] [2023-11-19 07:34:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:40,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:34:40,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673575201] [2023-11-19 07:34:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:40,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:40,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:40,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:34:40,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:34:41,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:34:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455106811] [2023-11-19 07:34:41,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:34:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673575201] [2023-11-19 07:34:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673575201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:41,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2023-11-19 07:34:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164411492] [2023-11-19 07:34:41,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:34:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:34:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:34:41,556 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 10 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) [2023-11-19 07:34:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:41,697 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-11-19 07:34:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:34:41,698 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 10 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) Word has length 47 [2023-11-19 07:34:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:41,699 INFO L225 Difference]: With dead ends: 34 [2023-11-19 07:34:41,699 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:34:41,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:34:41,704 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:41,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 93 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:34:41,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:34:41,708 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 07:34:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:34:41,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-11-19 07:34:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:41,709 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:34:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 10 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) [2023-11-19 07:34:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:34:41,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:34:41,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:34:41,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:34:41,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:34:42,030 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:34:42,030 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) (= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1)) [2023-11-19 07:34:42,030 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) (= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1)) [2023-11-19 07:34:42,031 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) [2023-11-19 07:34:42,031 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1)) [2023-11-19 07:34:42,031 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-11-19 07:34:42,031 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-11-19 07:34:42,031 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-11-19 07:34:42,031 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:34:42,031 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 19 57) no Hoare annotation was computed. [2023-11-19 07:34:42,032 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 1)) [2023-11-19 07:34:42,032 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2023-11-19 07:34:42,032 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:34:42,032 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-11-19 07:34:42,032 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:34:42,032 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1)) [2023-11-19 07:34:42,032 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2023-11-19 07:34:42,033 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 1)) [2023-11-19 07:34:42,033 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) [2023-11-19 07:34:42,033 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-11-19 07:34:42,033 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-11-19 07:34:42,033 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-11-19 07:34:42,033 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-11-19 07:34:42,034 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-11-19 07:34:42,034 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-11-19 07:34:42,034 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-11-19 07:34:42,034 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-11-19 07:34:42,034 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-11-19 07:34:42,034 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-11-19 07:34:42,038 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:34:42,040 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:34:42,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:34:42 BoogieIcfgContainer [2023-11-19 07:34:42,056 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:34:42,058 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:34:42,059 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:34:42,059 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:34:42,059 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:39" (3/4) ... [2023-11-19 07:34:42,062 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:34:42,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 07:34:42,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 07:34:42,074 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-19 07:34:42,075 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 07:34:42,075 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:34:42,075 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:34:42,076 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:34:42,175 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:34:42,176 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:34:42,176 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:34:42,177 INFO L158 Benchmark]: Toolchain (without parser) took 3933.21ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 153.5MB in the beginning and 128.7MB in the end (delta: 24.8MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-19 07:34:42,177 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:34:42,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.90ms. Allocated memory is still 182.5MB. Free memory was 153.5MB in the beginning and 143.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:34:42,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.60ms. Allocated memory is still 182.5MB. Free memory was 143.0MB in the beginning and 140.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:34:42,178 INFO L158 Benchmark]: Boogie Preprocessor took 20.81ms. Allocated memory is still 182.5MB. Free memory was 140.9MB in the beginning and 140.1MB in the end (delta: 864.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:34:42,178 INFO L158 Benchmark]: RCFGBuilder took 512.32ms. Allocated memory is still 182.5MB. Free memory was 140.1MB in the beginning and 146.0MB in the end (delta: -5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:34:42,179 INFO L158 Benchmark]: TraceAbstraction took 2982.24ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 145.1MB in the beginning and 132.9MB in the end (delta: 12.2MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2023-11-19 07:34:42,179 INFO L158 Benchmark]: Witness Printer took 117.63ms. Allocated memory is still 220.2MB. Free memory was 132.9MB in the beginning and 128.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:34:42,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.90ms. Allocated memory is still 182.5MB. Free memory was 153.5MB in the beginning and 143.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.60ms. Allocated memory is still 182.5MB. Free memory was 143.0MB in the beginning and 140.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.81ms. Allocated memory is still 182.5MB. Free memory was 140.9MB in the beginning and 140.1MB in the end (delta: 864.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 512.32ms. Allocated memory is still 182.5MB. Free memory was 140.1MB in the beginning and 146.0MB in the end (delta: -5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2982.24ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 145.1MB in the beginning and 132.9MB in the end (delta: 12.2MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. * Witness Printer took 117.63ms. Allocated memory is still 220.2MB. Free memory was 132.9MB in the beginning and 128.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 225 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 78 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 26 PreInvPairs, 34 NumberOfFragments, 111 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 436 SizeOfPredicates, 8 NumberOfNonLiveVariables, 346 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 206/248 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: 37]: Loop Invariant Derived loop invariant: ((((((b == u) && ((b % 4294967296) == 1)) && (b == y)) && (a == v)) && (a == x)) && ((x % 4294967296) == 1)) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:34:42,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4fd6cc-7c7e-49c2-9d2c-5642e2d4b176/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