./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_init4_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init4_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC --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 84dd450b83ffc0eda27ceeda48a4324978aec0ffc3f50cf64d7cfe4a88062bda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:10:29,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:10:29,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:10:29,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:10:29,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:10:29,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:10:29,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:10:29,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:10:29,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:10:29,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:10:29,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:10:29,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:10:29,179 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:10:29,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:10:29,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:10:29,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:10:29,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:10:29,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:10:29,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:10:29,183 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:10:29,184 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:10:29,184 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:10:29,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:10:29,185 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:10:29,186 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:10:29,186 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:10:29,187 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:10:29,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:10:29,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:10:29,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:10:29,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:10:29,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:10:29,190 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:10:29,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:10:29,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:10:29,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84dd450b83ffc0eda27ceeda48a4324978aec0ffc3f50cf64d7cfe4a88062bda [2023-11-23 20:10:29,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:10:29,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:10:29,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:10:29,552 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:10:29,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:10:29,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/array-examples/standard_init4_ground-1.i [2023-11-23 20:10:32,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:10:32,940 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:10:32,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/sv-benchmarks/c/array-examples/standard_init4_ground-1.i [2023-11-23 20:10:32,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/data/cfe8ce213/12c86f8fcf4b49fd84f1b1538db3c1ef/FLAGaad607336 [2023-11-23 20:10:32,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/data/cfe8ce213/12c86f8fcf4b49fd84f1b1538db3c1ef [2023-11-23 20:10:32,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:10:32,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:10:32,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:10:32,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:10:32,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:10:32,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:10:32" (1/1) ... [2023-11-23 20:10:32,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35cbd67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:32, skipping insertion in model container [2023-11-23 20:10:32,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:10:32" (1/1) ... [2023-11-23 20:10:33,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:10:33,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:10:33,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:10:33,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:10:33,215 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:10:33,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33 WrapperNode [2023-11-23 20:10:33,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:10:33,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:10:33,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:10:33,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:10:33,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,249 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-11-23 20:10:33,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:10:33,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:10:33,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:10:33,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:10:33,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:10:33,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:10:33,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:10:33,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:10:33,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:10:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:10:33,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:10:33,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83e0290-43b3-4879-ab23-25316c261c84/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:10:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:10:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:10:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:10:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:10:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:10:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:10:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:10:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:10:33,421 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:10:33,424 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:10:33,598 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:10:33,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:10:33,668 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 20:10:33,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:33 BoogieIcfgContainer [2023-11-23 20:10:33,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:10:33,671 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:10:33,671 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:10:33,682 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:10:33,682 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:33" (1/1) ... [2023-11-23 20:10:33,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:10:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 27 states and 31 transitions. [2023-11-23 20:10:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-23 20:10:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:10:33,756 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:10:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 29 states and 34 transitions. [2023-11-23 20:10:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-23 20:10:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:10:34,054 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:10:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 30 states and 35 transitions. [2023-11-23 20:10:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-23 20:10:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:10:34,136 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:10:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 32 states and 38 transitions. [2023-11-23 20:10:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-11-23 20:10:34,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:10:34,296 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:10:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 33 states and 39 transitions. [2023-11-23 20:10:34,488 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-11-23 20:10:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:10:34,488 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:10:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 32 states and 38 transitions. [2023-11-23 20:10:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-11-23 20:10:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:10:34,621 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:10:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2023-11-23 20:10:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-23 20:10:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:10:34,817 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:10:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 33 states and 40 transitions. [2023-11-23 20:10:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-23 20:10:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:10:34,888 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:10:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 34 states and 41 transitions. [2023-11-23 20:10:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-11-23 20:10:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:10:34,977 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:34,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:10:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 36 states and 44 transitions. [2023-11-23 20:10:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-23 20:10:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:10:35,107 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:10:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 37 states and 45 transitions. [2023-11-23 20:10:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-11-23 20:10:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:10:35,225 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 20:10:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 36 states and 44 transitions. [2023-11-23 20:10:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-23 20:10:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 20:10:35,284 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 20:10:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 35 states and 43 transitions. [2023-11-23 20:10:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-11-23 20:10:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:10:35,390 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:10:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 37 states and 46 transitions. [2023-11-23 20:10:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-11-23 20:10:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:10:35,450 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:10:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 38 states and 47 transitions. [2023-11-23 20:10:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-11-23 20:10:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 20:10:35,503 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:10:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 40 states and 50 transitions. [2023-11-23 20:10:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2023-11-23 20:10:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:10:35,572 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:10:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 41 states and 51 transitions. [2023-11-23 20:10:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-11-23 20:10:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:10:35,635 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:10:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 40 states and 50 transitions. [2023-11-23 20:10:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2023-11-23 20:10:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:10:35,696 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:10:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 39 states and 49 transitions. [2023-11-23 20:10:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-11-23 20:10:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:10:35,773 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:10:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 41 states and 52 transitions. [2023-11-23 20:10:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2023-11-23 20:10:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:10:35,840 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:10:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 42 states and 53 transitions. [2023-11-23 20:10:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-11-23 20:10:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 20:10:35,942 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:35,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:10:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 44 states and 56 transitions. [2023-11-23 20:10:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-11-23 20:10:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:10:36,051 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:10:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 45 states and 57 transitions. [2023-11-23 20:10:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2023-11-23 20:10:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:10:36,158 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 20:10:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 44 states and 56 transitions. [2023-11-23 20:10:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-11-23 20:10:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 20:10:36,233 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 43 states and 55 transitions. [2023-11-23 20:10:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2023-11-23 20:10:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:10:36,354 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:10:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 45 states and 58 transitions. [2023-11-23 20:10:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2023-11-23 20:10:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 20:10:36,554 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:10:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 46 states and 59 transitions. [2023-11-23 20:10:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2023-11-23 20:10:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 20:10:36,658 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 49 states and 62 transitions. [2023-11-23 20:10:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2023-11-23 20:10:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 20:10:36,991 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:36,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 52 states and 65 transitions. [2023-11-23 20:10:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-11-23 20:10:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 20:10:37,272 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 55 states and 68 transitions. [2023-11-23 20:10:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-11-23 20:10:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 20:10:37,577 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 58 states and 71 transitions. [2023-11-23 20:10:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-11-23 20:10:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 20:10:37,966 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 61 states and 74 transitions. [2023-11-23 20:10:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2023-11-23 20:10:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 20:10:38,317 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 64 states and 77 transitions. [2023-11-23 20:10:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2023-11-23 20:10:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 20:10:38,708 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:38,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 67 states and 80 transitions. [2023-11-23 20:10:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2023-11-23 20:10:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 20:10:39,116 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 70 states and 83 transitions. [2023-11-23 20:10:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2023-11-23 20:10:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 20:10:39,585 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 73 states and 86 transitions. [2023-11-23 20:10:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2023-11-23 20:10:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 20:10:40,080 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:40,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 76 states and 89 transitions. [2023-11-23 20:10:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2023-11-23 20:10:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 20:10:40,619 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:40,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 79 states and 92 transitions. [2023-11-23 20:10:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2023-11-23 20:10:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 20:10:41,131 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 82 states and 95 transitions. [2023-11-23 20:10:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2023-11-23 20:10:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 20:10:41,703 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 85 states and 98 transitions. [2023-11-23 20:10:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2023-11-23 20:10:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 20:10:42,318 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:42,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 88 states and 101 transitions. [2023-11-23 20:10:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2023-11-23 20:10:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 20:10:42,977 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 91 states and 104 transitions. [2023-11-23 20:10:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2023-11-23 20:10:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 20:10:43,698 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:43,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 94 states and 107 transitions. [2023-11-23 20:10:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2023-11-23 20:10:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 20:10:44,397 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 97 states and 110 transitions. [2023-11-23 20:10:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2023-11-23 20:10:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 20:10:45,104 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 100 states and 113 transitions. [2023-11-23 20:10:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2023-11-23 20:10:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 20:10:45,861 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:46,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 103 states and 116 transitions. [2023-11-23 20:10:46,680 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-11-23 20:10:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 20:10:46,681 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 106 states and 119 transitions. [2023-11-23 20:10:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2023-11-23 20:10:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 20:10:47,537 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 109 states and 122 transitions. [2023-11-23 20:10:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2023-11-23 20:10:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 20:10:48,360 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 112 states and 125 transitions. [2023-11-23 20:10:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2023-11-23 20:10:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 20:10:49,202 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:49,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:50,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 115 states and 128 transitions. [2023-11-23 20:10:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2023-11-23 20:10:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 20:10:50,160 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 118 states and 131 transitions. [2023-11-23 20:10:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2023-11-23 20:10:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-23 20:10:51,122 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 121 states and 134 transitions. [2023-11-23 20:10:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2023-11-23 20:10:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 20:10:52,110 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:52,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 124 states and 137 transitions. [2023-11-23 20:10:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2023-11-23 20:10:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 20:10:53,058 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 127 states and 140 transitions. [2023-11-23 20:10:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-11-23 20:10:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 20:10:54,064 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:54,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 130 states and 143 transitions. [2023-11-23 20:10:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2023-11-23 20:10:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 20:10:55,129 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 133 states and 146 transitions. [2023-11-23 20:10:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2023-11-23 20:10:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 20:10:56,292 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 136 states and 149 transitions. [2023-11-23 20:10:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2023-11-23 20:10:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 20:10:57,460 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:57,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 139 states and 152 transitions. [2023-11-23 20:10:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2023-11-23 20:10:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 20:10:58,641 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:58,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:10:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 142 states and 155 transitions. [2023-11-23 20:10:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 155 transitions. [2023-11-23 20:10:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 20:10:59,849 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 145 states and 158 transitions. [2023-11-23 20:11:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2023-11-23 20:11:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 20:11:01,090 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 148 states and 161 transitions. [2023-11-23 20:11:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2023-11-23 20:11:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 20:11:02,365 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:02,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 151 states and 164 transitions. [2023-11-23 20:11:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2023-11-23 20:11:03,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 20:11:03,619 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2052 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 154 states and 167 transitions. [2023-11-23 20:11:04,827 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions. [2023-11-23 20:11:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 20:11:04,828 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2164 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 157 states and 170 transitions. [2023-11-23 20:11:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 170 transitions. [2023-11-23 20:11:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 20:11:06,092 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:07,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 160 states and 173 transitions. [2023-11-23 20:11:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 173 transitions. [2023-11-23 20:11:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 20:11:07,462 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:07,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 163 states and 176 transitions. [2023-11-23 20:11:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2023-11-23 20:11:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 20:11:08,926 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:08,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2518 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 166 states and 179 transitions. [2023-11-23 20:11:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2023-11-23 20:11:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 20:11:10,401 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:10,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 169 states and 182 transitions. [2023-11-23 20:11:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 182 transitions. [2023-11-23 20:11:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-23 20:11:11,810 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 20:11:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 172 states and 185 transitions. [2023-11-23 20:11:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 185 transitions. [2023-11-23 20:11:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 20:11:13,399 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:11:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2899 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.