./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/ps2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps2-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 179b0134270d97f57074f9ac11d0788729a2f9ba65b60cccc5fdcd06091925db --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:35:08,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:35:08,773 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-32bit-Kojak_Default.epf [2024-11-13 16:35:08,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:35:08,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 16:35:08,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:35:08,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:35:08,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 16:35:08,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:35:08,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:35:08,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:35:08,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:35:08,840 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:35:08,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:35:08,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:35:08,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:35:08,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:35:08,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:35:08,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:35:08,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:35:08,842 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 16:35:08,842 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:35:08,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:35:08,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:35:08,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:35:08,842 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 16:35:08,843 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 16:35:08,843 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 16:35:08,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:35:08,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 16:35:08,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:35:08,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:35:08,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:35:08,844 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 16:35:08,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:35:08,844 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_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm 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 ! overflow) ) 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 -> 179b0134270d97f57074f9ac11d0788729a2f9ba65b60cccc5fdcd06091925db [2024-11-13 16:35:09,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:35:09,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:35:09,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:35:09,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:35:09,256 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:35:09,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/nla-digbench/ps2-ll.c Unable to find full path for "g++" [2024-11-13 16:35:12,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:35:12,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:35:12,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/sv-benchmarks/c/nla-digbench/ps2-ll.c [2024-11-13 16:35:12,447 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/data/fc5725d54/7ea90bf3464d419bb960d07b089db479/FLAGff2338346 [2024-11-13 16:35:12,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/data/fc5725d54/7ea90bf3464d419bb960d07b089db479 [2024-11-13 16:35:12,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:35:12,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:35:12,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:35:12,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:35:12,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:35:12,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:35:12" (1/1) ... [2024-11-13 16:35:12,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65beb41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:12, skipping insertion in model container [2024-11-13 16:35:12,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:35:12" (1/1) ... [2024-11-13 16:35:12,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:35:12,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:35:12,979 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:35:13,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:35:13,021 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:35:13,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13 WrapperNode [2024-11-13 16:35:13,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:35:13,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:35:13,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:35:13,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:35:13,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,069 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2024-11-13 16:35:13,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:35:13,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:35:13,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:35:13,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:35:13,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:35:13,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:35:13,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:35:13,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:35:13,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 16:35:13,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 16:35:13,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 16:35:13,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb887934-88cd-427f-8b71-682922deb811/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 16:35:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:35:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 16:35:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:35:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:35:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 16:35:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 16:35:13,353 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:35:13,356 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:35:13,749 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-13 16:35:13,750 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:35:13,822 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:35:13,823 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:35:13,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:35:13 BoogieIcfgContainer [2024-11-13 16:35:13,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:35:13,829 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 16:35:13,829 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 16:35:13,843 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 16:35:13,843 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:35:13" (1/1) ... [2024-11-13 16:35:13,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:35:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 53 states and 55 transitions. [2024-11-13 16:35:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2024-11-13 16:35:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 16:35:13,909 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 52 states and 53 transitions. [2024-11-13 16:35:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-13 16:35:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 16:35:14,130 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:35:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:14,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:35:14,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 55 states and 57 transitions. [2024-11-13 16:35:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-13 16:35:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:35:14,294 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 59 states and 63 transitions. [2024-11-13 16:35:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-13 16:35:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 16:35:14,593 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 64 states and 70 transitions. [2024-11-13 16:35:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2024-11-13 16:35:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 16:35:15,100 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:15,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 63 states and 69 transitions. [2024-11-13 16:35:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2024-11-13 16:35:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 16:35:15,408 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 66 states and 73 transitions. [2024-11-13 16:35:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2024-11-13 16:35:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:35:16,224 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 71 states and 80 transitions. [2024-11-13 16:35:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2024-11-13 16:35:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:35:17,392 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:17,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 72 states and 81 transitions. [2024-11-13 16:35:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2024-11-13 16:35:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:35:17,795 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 84 states and 99 transitions. [2024-11-13 16:35:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-11-13 16:35:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:35:18,833 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:18,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 83 states and 98 transitions. [2024-11-13 16:35:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2024-11-13 16:35:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 16:35:18,870 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:18,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 84 states and 99 transitions. [2024-11-13 16:35:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-11-13 16:35:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 16:35:18,950 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:18,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 88 states and 106 transitions. [2024-11-13 16:35:19,391 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2024-11-13 16:35:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 16:35:19,392 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 93 states and 114 transitions. [2024-11-13 16:35:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2024-11-13 16:35:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 16:35:19,770 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 103 states and 128 transitions. [2024-11-13 16:35:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2024-11-13 16:35:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:35:20,646 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 104 states and 129 transitions. [2024-11-13 16:35:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2024-11-13 16:35:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:35:20,750 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 114 states and 143 transitions. [2024-11-13 16:35:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2024-11-13 16:35:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:35:21,318 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 119 states and 150 transitions. [2024-11-13 16:35:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 150 transitions. [2024-11-13 16:35:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:35:21,690 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 118 states and 149 transitions. [2024-11-13 16:35:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 149 transitions. [2024-11-13 16:35:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:35:21,810 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:21,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 124 states and 158 transitions. [2024-11-13 16:35:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2024-11-13 16:35:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:35:22,271 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:22,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 127 states and 162 transitions. [2024-11-13 16:35:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2024-11-13 16:35:22,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:35:22,424 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:22,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 134 states and 172 transitions. [2024-11-13 16:35:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2024-11-13 16:35:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 16:35:22,636 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:22,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 135 states and 173 transitions. [2024-11-13 16:35:22,762 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2024-11-13 16:35:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 16:35:22,763 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 16:35:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:22,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:35:22,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 140 states and 182 transitions. [2024-11-13 16:35:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2024-11-13 16:35:23,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:35:23,513 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 144 states and 185 transitions. [2024-11-13 16:35:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 185 transitions. [2024-11-13 16:35:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 16:35:23,906 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 149 states and 195 transitions. [2024-11-13 16:35:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2024-11-13 16:35:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:35:24,563 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 149 states and 194 transitions. [2024-11-13 16:35:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2024-11-13 16:35:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 16:35:25,381 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:25,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 148 states and 193 transitions. [2024-11-13 16:35:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 193 transitions. [2024-11-13 16:35:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 16:35:27,343 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:39,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:35:49,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:35:59,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:35:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:35:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 152 states and 201 transitions. [2024-11-13 16:35:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 201 transitions. [2024-11-13 16:35:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 16:35:59,797 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:35:59,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:36:12,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:36:22,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:36:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:36:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 168 states and 231 transitions. [2024-11-13 16:36:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 231 transitions. [2024-11-13 16:36:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 16:36:22,243 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:36:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:36:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:36:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:36:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:36:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 172 states and 236 transitions. [2024-11-13 16:36:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 236 transitions. [2024-11-13 16:36:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:36:23,947 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:36:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:36:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:36:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:36:35,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:36:45,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:36:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:36:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 189 states and 269 transitions. [2024-11-13 16:36:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2024-11-13 16:36:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:36:46,193 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:36:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:36:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:36:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:36:58,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:37:08,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:37:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:37:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 195 states and 279 transitions. [2024-11-13 16:37:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 279 transitions. [2024-11-13 16:37:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:37:08,559 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:37:08,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:37:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:37:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:37:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:37:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 199 states and 284 transitions. [2024-11-13 16:37:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 284 transitions. [2024-11-13 16:37:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:37:10,354 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:37:10,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:37:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:37:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:37:21,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:37:31,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:37:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:37:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 206 states and 302 transitions. [2024-11-13 16:37:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 302 transitions. [2024-11-13 16:37:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:37:32,261 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:37:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:37:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:37:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:37:42,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:37:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:37:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 209 states and 309 transitions. [2024-11-13 16:37:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 309 transitions. [2024-11-13 16:37:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:37:43,435 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:37:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:37:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:37:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:37:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:37:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 213 states and 314 transitions. [2024-11-13 16:37:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 314 transitions. [2024-11-13 16:37:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:37:45,122 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:37:45,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:37:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:37:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:37:57,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:37:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:37:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 225 states and 337 transitions. [2024-11-13 16:37:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 337 transitions. [2024-11-13 16:37:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:37:58,346 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:37:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:37:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:37:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 16:38:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:38:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 229 states and 346 transitions. [2024-11-13 16:38:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 346 transitions. [2024-11-13 16:38:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:38:00,948 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:38:00,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:38:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:38:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:38:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:38:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 233 states and 357 transitions. [2024-11-13 16:38:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 357 transitions. [2024-11-13 16:38:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:38:03,456 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:38:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:38:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:38:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:38:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:38:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 245 states and 379 transitions. [2024-11-13 16:38:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2024-11-13 16:38:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:38:07,362 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:38:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:38:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:38:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:38:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:38:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 245 states and 378 transitions. [2024-11-13 16:38:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 378 transitions. [2024-11-13 16:38:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:38:08,551 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:38:08,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:38:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:38:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 16:38:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:38:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 248 states and 386 transitions. [2024-11-13 16:38:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 386 transitions. [2024-11-13 16:38:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 16:38:09,662 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:38:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:38:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:38:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:38:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 16:38:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 247 states and 385 transitions. [2024-11-13 16:38:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 385 transitions. [2024-11-13 16:38:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 16:38:10,671 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 16:38:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:38:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:38:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.