./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/fermat2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench/fermat2-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b --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 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 21:39:44,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 21:39:44,665 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-05 21:39:44,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 21:39:44,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 21:39:44,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 21:39:44,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 21:39:44,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 21:39:44,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 21:39:44,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 21:39:44,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 21:39:44,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 21:39:44,700 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 21:39:44,700 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 21:39:44,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 21:39:44,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 21:39:44,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 21:39:44,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 21:39:44,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 21:39:44,701 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 21:39:44,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 21:39:44,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b 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 -> 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 [2024-12-05 21:39:45,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 21:39:45,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 21:39:45,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 21:39:45,022 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 21:39:45,023 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 21:39:45,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/nla-digbench/fermat2-ll.c [2024-12-05 21:39:48,461 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/data/7cba427b8/b4005060b07146b497e7991b7d1b3e38/FLAG905b0626c [2024-12-05 21:39:48,701 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 21:39:48,701 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/sv-benchmarks/c/nla-digbench/fermat2-ll.c [2024-12-05 21:39:48,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/data/7cba427b8/b4005060b07146b497e7991b7d1b3e38/FLAG905b0626c [2024-12-05 21:39:49,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/data/7cba427b8/b4005060b07146b497e7991b7d1b3e38 [2024-12-05 21:39:49,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 21:39:49,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 21:39:49,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 21:39:49,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 21:39:49,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 21:39:49,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acd5f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49, skipping insertion in model container [2024-12-05 21:39:49,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 21:39:49,242 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_e096ac18-1684-439b-a3b2-e8b64b1011b4/sv-benchmarks/c/nla-digbench/fermat2-ll.c[524,537] [2024-12-05 21:39:49,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 21:39:49,276 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 21:39:49,289 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_e096ac18-1684-439b-a3b2-e8b64b1011b4/sv-benchmarks/c/nla-digbench/fermat2-ll.c[524,537] [2024-12-05 21:39:49,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 21:39:49,311 INFO L204 MainTranslator]: Completed translation [2024-12-05 21:39:49,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49 WrapperNode [2024-12-05 21:39:49,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 21:39:49,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 21:39:49,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 21:39:49,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 21:39:49,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,349 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2024-12-05 21:39:49,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 21:39:49,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 21:39:49,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 21:39:49,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 21:39:49,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,361 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 21:39:49,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 21:39:49,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 21:39:49,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 21:39:49,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 21:39:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 21:39:49,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 21:39:49,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e096ac18-1684-439b-a3b2-e8b64b1011b4/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 21:39:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 21:39:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-05 21:39:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-05 21:39:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 21:39:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 21:39:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 21:39:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-05 21:39:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-05 21:39:49,515 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 21:39:49,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 21:39:49,642 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-12-05 21:39:49,642 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 21:39:49,682 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 21:39:49,683 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-05 21:39:49,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:39:49 BoogieIcfgContainer [2024-12-05 21:39:49,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 21:39:49,684 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 21:39:49,684 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 21:39:49,693 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 21:39:49,693 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:39:49" (1/1) ... [2024-12-05 21:39:49,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 21:39:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:39:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2024-12-05 21:39:49,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-12-05 21:39:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-05 21:39:49,770 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:39:49,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:39:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-05 21:39:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:39:49,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-05 21:39:49,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 21:39:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 21:39:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:39:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 20 states and 26 transitions. [2024-12-05 21:39:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-12-05 21:39:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 21:39:50,859 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:39:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:39:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:39:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 21:39:52,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:39:56,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:39:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:39:56,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 20 states and 24 transitions. [2024-12-05 21:39:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-12-05 21:39:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 21:39:56,865 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:39:56,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:39:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-05 21:39:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:39:56,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-05 21:39:56,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 21:40:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 21:40:33,211 WARN L286 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 29 DAG size of output: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:40:35,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:40:45,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:40:46,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:41:00,726 WARN L286 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 48 DAG size of output: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:41:18,916 WARN L286 SmtUtils]: Spent 15.16s on a formula simplification. DAG size of input: 49 DAG size of output: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:41:25,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:41:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 23 states and 33 transitions. [2024-12-05 21:41:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2024-12-05 21:41:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-05 21:41:26,159 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-05 21:41:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:26,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-05 21:41:26,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 21:42:40,093 WARN L286 SmtUtils]: Spent 14.15s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:42:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 21:43:13,466 WARN L286 SmtUtils]: Spent 11.84s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:43:58,747 WARN L286 SmtUtils]: Spent 20.65s on a formula simplification. DAG size of input: 71 DAG size of output: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:45:37,231 WARN L286 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 77 DAG size of output: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:46:12,828 WARN L286 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:46:21,908 WARN L286 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 78 DAG size of output: 46 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:46:28,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:46:46,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:46:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:46:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 25 states and 38 transitions. [2024-12-05 21:46:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 38 transitions. [2024-12-05 21:46:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-05 21:46:47,123 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:46:47,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:46:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-05 21:46:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:46:47,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-05 21:46:47,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 21:48:13,962 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:48:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-05 21:49:20,536 WARN L286 SmtUtils]: Spent 11.47s on a formula simplification. DAG size of input: 95 DAG size of output: 64 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:49:43,537 WARN L286 SmtUtils]: Spent 12.10s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:49:45,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:51:35,782 WARN L286 SmtUtils]: Spent 27.14s on a formula simplification. DAG size of input: 93 DAG size of output: 47 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:52:06,997 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:52:37,837 WARN L286 SmtUtils]: Spent 30.69s on a formula simplification. DAG size of input: 94 DAG size of output: 71 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:52:54,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:53:46,216 WARN L286 SmtUtils]: Spent 25.60s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-05 21:53:49,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-05 21:53:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:53:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 27 states and 43 transitions. [2024-12-05 21:53:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2024-12-05 21:53:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-05 21:53:49,989 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:53:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:53:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-05 21:53:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:53:50,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-05 21:53:50,492 INFO L279 TraceCheckSpWp]: Computing forward predicates...