./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 00:55:36,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 00:55:36,584 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-09 00:55:36,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 00:55:36,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-09 00:55:36,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 00:55:36,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 00:55:36,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-09 00:55:36,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 00:55:36,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 00:55:36,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 00:55:36,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 00:55:36,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 00:55:36,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 00:55:36,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 00:55:36,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 00:55:36,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 00:55:36,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 00:55:36,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 00:55:36,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 00:55:36,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 00:55:36,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 00:55:36,649 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 00:55:36,649 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-09 00:55:36,649 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-09 00:55:36,650 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-09 00:55:36,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 00:55:36,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:55:36,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 00:55:36,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 00:55:36,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 00:55:36,651 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-09 00:55:36,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 00:55:36,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe [2024-11-09 00:55:36,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 00:55:37,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 00:55:37,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 00:55:37,018 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 00:55:37,019 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 00:55:37,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i Unable to find full path for "g++" [2024-11-09 00:55:39,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 00:55:39,396 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 00:55:39,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i [2024-11-09 00:55:39,410 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data/02a5feac9/66ec6a633ee34355b5b0d1b915d51abb/FLAG910432423 [2024-11-09 00:55:39,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data/02a5feac9/66ec6a633ee34355b5b0d1b915d51abb [2024-11-09 00:55:39,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 00:55:39,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 00:55:39,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 00:55:39,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 00:55:39,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 00:55:39,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b64f262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39, skipping insertion in model container [2024-11-09 00:55:39,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 00:55:39,678 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2024-11-09 00:55:39,711 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2024-11-09 00:55:39,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:55:39,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 00:55:39,744 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2024-11-09 00:55:39,758 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2024-11-09 00:55:39,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:55:39,781 INFO L204 MainTranslator]: Completed translation [2024-11-09 00:55:39,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39 WrapperNode [2024-11-09 00:55:39,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 00:55:39,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 00:55:39,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 00:55:39,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 00:55:39,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,826 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 78 [2024-11-09 00:55:39,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 00:55:39,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 00:55:39,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 00:55:39,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 00:55:39,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 00:55:39,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 00:55:39,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 00:55:39,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 00:55:39,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:39" (1/1) ... [2024-11-09 00:55:39,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:55:39,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-09 00:55:39,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-09 00:55:39,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-09 00:55:39,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 00:55:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-09 00:55:39,963 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-09 00:55:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-09 00:55:39,963 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-09 00:55:39,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 00:55:39,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 00:55:39,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 00:55:39,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 00:55:39,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 00:55:40,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 00:55:40,059 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 00:55:40,388 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-09 00:55:40,389 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 00:55:40,469 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 00:55:40,470 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 00:55:40,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:55:40 BoogieIcfgContainer [2024-11-09 00:55:40,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 00:55:40,472 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-09 00:55:40,472 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-09 00:55:40,483 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-09 00:55:40,484 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:55:40" (1/1) ... [2024-11-09 00:55:40,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 00:55:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:55:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 33 states and 42 transitions. [2024-11-09 00:55:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-09 00:55:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 00:55:40,564 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:55:40,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:55:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:55:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:55:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:55:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 33 states and 40 transitions. [2024-11-09 00:55:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-09 00:55:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 00:55:41,052 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:55:41,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:55:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:55:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:55:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:55:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 34 states and 42 transitions. [2024-11-09 00:55:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-09 00:55:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 00:55:41,303 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:55:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:55:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:55:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:55:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:55:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 34 states and 41 transitions. [2024-11-09 00:55:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-09 00:55:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 00:55:41,417 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:55:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:55:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:55:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:55:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:55:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 37 states and 46 transitions. [2024-11-09 00:55:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-09 00:55:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 00:55:42,154 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:55:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:55:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:55:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:55:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:55:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 42 states and 57 transitions. [2024-11-09 00:55:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2024-11-09 00:55:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 00:55:42,934 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:55:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:55:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:55:42,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:55:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:55:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:55:43,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:55:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:55:43,046 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-11-09 00:55:43,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.11 12:55:43 ImpRootNode [2024-11-09 00:55:43,098 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-09 00:55:43,099 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 00:55:43,099 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 00:55:43,099 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 00:55:43,100 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:55:40" (3/4) ... [2024-11-09 00:55:43,103 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 00:55:43,104 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 00:55:43,105 INFO L158 Benchmark]: Toolchain (without parser) took 3671.94ms. Allocated memory is still 151.0MB. Free memory was 114.6MB in the beginning and 73.7MB in the end (delta: 41.0MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2024-11-09 00:55:43,106 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 86.5MB in the end (delta: 75.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:55:43,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.83ms. Allocated memory is still 151.0MB. Free memory was 114.6MB in the beginning and 101.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 00:55:43,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.99ms. Allocated memory is still 151.0MB. Free memory was 100.8MB in the beginning and 99.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:55:43,108 INFO L158 Benchmark]: Boogie Preprocessor took 48.39ms. Allocated memory is still 151.0MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:55:43,109 INFO L158 Benchmark]: RCFGBuilder took 594.71ms. Allocated memory is still 151.0MB. Free memory was 97.9MB in the beginning and 80.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 00:55:43,109 INFO L158 Benchmark]: CodeCheck took 2626.36ms. Allocated memory is still 151.0MB. Free memory was 80.3MB in the beginning and 74.6MB in the end (delta: 5.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-11-09 00:55:43,110 INFO L158 Benchmark]: Witness Printer took 5.66ms. Allocated memory is still 151.0MB. Free memory was 74.6MB in the beginning and 73.7MB in the end (delta: 925.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:55:43,113 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 4 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 196 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 54 mSDtfsCounter, 196 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/5 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 109]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) VAL [\old(x)=2] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) VAL [IN=2] [L100] CALL, EXPR fp(IN) VAL [\old(x)=2] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) VAL [IN=2] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=3] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L102] RET, EXPR f(x) VAL [IN=2, x=3] [L102] CALL, EXPR fp(x) VAL [\old(x)=3] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L102] RET, EXPR fp(x) VAL [IN=2, x=3] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=2] [L109] reach_error() VAL [IN=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 86.5MB in the end (delta: 75.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.83ms. Allocated memory is still 151.0MB. Free memory was 114.6MB in the beginning and 101.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.99ms. Allocated memory is still 151.0MB. Free memory was 100.8MB in the beginning and 99.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.39ms. Allocated memory is still 151.0MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.71ms. Allocated memory is still 151.0MB. Free memory was 97.9MB in the beginning and 80.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2626.36ms. Allocated memory is still 151.0MB. Free memory was 80.3MB in the beginning and 74.6MB in the end (delta: 5.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Witness Printer took 5.66ms. Allocated memory is still 151.0MB. Free memory was 74.6MB in the beginning and 73.7MB in the end (delta: 925.8kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 00:55:43,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 00:55:45,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 00:55:46,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2024-11-09 00:55:46,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 00:55:46,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 00:55:46,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-09 00:55:46,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 00:55:46,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 00:55:46,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 00:55:46,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 00:55:46,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 00:55:46,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 00:55:46,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 00:55:46,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 00:55:46,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 00:55:46,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 00:55:46,064 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 00:55:46,064 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 00:55:46,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 00:55:46,065 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 00:55:46,066 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 00:55:46,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 00:55:46,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 00:55:46,067 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-09 00:55:46,068 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-09 00:55:46,068 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-09 00:55:46,069 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 00:55:46,069 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-09 00:55:46,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 00:55:46,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:55:46,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 00:55:46,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 00:55:46,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 00:55:46,072 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 00:55:46,072 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 00:55:46,073 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-09 00:55:46,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 131b2ae9424ecd75292a5889f04853eea3cca0c3e4c679243c4666d6f4003ffe [2024-11-09 00:55:46,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 00:55:46,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 00:55:46,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 00:55:46,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 00:55:46,629 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 00:55:46,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/combinations/gcd_4+newton_2_8.i Unable to find full path for "g++" [2024-11-09 00:55:48,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 00:55:49,002 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 00:55:49,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i [2024-11-09 00:55:49,011 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data/bd961e376/ebcb13c5f62c45a088360f75546d0e1c/FLAG4a03b1ff2 [2024-11-09 00:55:49,332 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/data/bd961e376/ebcb13c5f62c45a088360f75546d0e1c [2024-11-09 00:55:49,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 00:55:49,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 00:55:49,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 00:55:49,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 00:55:49,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 00:55:49,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166707ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49, skipping insertion in model container [2024-11-09 00:55:49,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 00:55:49,613 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2024-11-09 00:55:49,659 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2024-11-09 00:55:49,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:55:49,684 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 00:55:49,703 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[1224,1237] [2024-11-09 00:55:49,725 WARN L250 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_16dc2990-238e-4480-bec1-c490b67161d2/sv-benchmarks/c/combinations/gcd_4+newton_2_8.i[2827,2840] [2024-11-09 00:55:49,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:55:49,751 INFO L204 MainTranslator]: Completed translation [2024-11-09 00:55:49,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49 WrapperNode [2024-11-09 00:55:49,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 00:55:49,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 00:55:49,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 00:55:49,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 00:55:49,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,811 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 75 [2024-11-09 00:55:49,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 00:55:49,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 00:55:49,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 00:55:49,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 00:55:49,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 00:55:49,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 00:55:49,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 00:55:49,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 00:55:49,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:55:49" (1/1) ... [2024-11-09 00:55:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:55:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-09 00:55:49,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-09 00:55:49,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-09 00:55:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 00:55:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 00:55:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-09 00:55:49,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-09 00:55:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-09 00:55:49,993 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-09 00:55:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 00:55:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 00:55:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 00:55:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 00:55:50,086 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 00:55:50,089 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 00:56:13,747 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-09 00:56:13,748 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 00:56:13,823 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 00:56:13,823 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 00:56:13,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:56:13 BoogieIcfgContainer [2024-11-09 00:56:13,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 00:56:13,825 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-09 00:56:13,825 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-09 00:56:13,837 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-09 00:56:13,837 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:56:13" (1/1) ... [2024-11-09 00:56:13,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 00:56:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:56:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 33 states and 42 transitions. [2024-11-09 00:56:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-09 00:56:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 00:56:13,930 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:56:13,932 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 00:56:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-09 00:56:13,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 00:56:13,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-09 00:56:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:14,150 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-09 00:56:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:14,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 00:56:14,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 00:56:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:56:14,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-09 00:56:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:56:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 33 states and 40 transitions. [2024-11-09 00:56:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-09 00:56:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 00:56:14,536 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:56:14,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 00:56:14,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-09 00:56:14,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 00:56:14,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-09 00:56:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:14,708 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-09 00:56:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:14,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 00:56:14,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 00:56:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:56:14,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-09 00:56:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:56:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 34 states and 42 transitions. [2024-11-09 00:56:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-09 00:56:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 00:56:15,583 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:56:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 00:56:15,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-09 00:56:15,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 00:56:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-09 00:56:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:15,669 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-09 00:56:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:15,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 00:56:15,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 00:56:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:56:15,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-09 00:56:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:56:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 34 states and 41 transitions. [2024-11-09 00:56:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-09 00:56:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 00:56:16,051 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:56:16,051 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 00:56:16,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-09 00:56:16,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 00:56:16,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-09 00:56:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:16,275 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-09 00:56:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:16,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 00:56:16,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 00:56:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:56:16,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-09 00:56:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:56:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 36 states and 44 transitions. [2024-11-09 00:56:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-09 00:56:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 00:56:17,321 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:56:17,321 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 00:56:17,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-09 00:56:17,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 00:56:17,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-09 00:56:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:17,503 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-09 00:56:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:56:17,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 00:56:17,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 00:56:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:56:17,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-09 00:56:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:56:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 38 states and 47 transitions. [2024-11-09 00:56:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2024-11-09 00:56:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 00:56:19,081 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:56:19,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 00:56:19,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-09 00:56:19,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 00:56:19,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16dc2990-238e-4480-bec1-c490b67161d2/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process