./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d4ed8c57ce722a6c7368f844e0bd557207245c570ed48ded2021df85adb4676 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:06:24,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:06:24,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 04:06:24,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:06:24,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:06:24,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:06:24,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:06:24,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:06:24,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:06:24,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:06:24,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:06:24,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:06:24,251 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:06:24,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:06:24,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:06:24,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:06:24,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:06:24,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:06:24,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:06:24,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:06:24,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:06:24,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:06:24,259 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:06:24,259 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:06:24,260 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:06:24,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:06:24,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:06:24,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:06:24,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:06:24,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:06:24,264 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:06:24,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:06:24,265 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:06:24,265 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_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d4ed8c57ce722a6c7368f844e0bd557207245c570ed48ded2021df85adb4676 [2023-11-19 04:06:24,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:06:24,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:06:24,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:06:24,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:06:24,681 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:06:24,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c [2023-11-19 04:06:27,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:06:28,195 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:06:28,196 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c [2023-11-19 04:06:28,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/data/fa5ccc1d7/47bf7637ad8446aa8665a97a80b47b84/FLAGef68628e8 [2023-11-19 04:06:28,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/data/fa5ccc1d7/47bf7637ad8446aa8665a97a80b47b84 [2023-11-19 04:06:28,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:06:28,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:06:28,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:06:28,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:06:28,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:06:28,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e773a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28, skipping insertion in model container [2023-11-19 04:06:28,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:06:28,402 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c[588,601] [2023-11-19 04:06:28,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:06:28,438 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:06:28,448 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound10.c[588,601] [2023-11-19 04:06:28,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:06:28,475 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:06:28,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28 WrapperNode [2023-11-19 04:06:28,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:06:28,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:06:28,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:06:28,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:06:28,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,517 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-11-19 04:06:28,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:06:28,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:06:28,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:06:28,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:06:28,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:06:28,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:06:28,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:06:28,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:06:28,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:06:28,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:06:28,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:06:28,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8021f01-ea94-4677-a7fd-9881429ff925/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:06:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:06:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:06:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:06:28,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:06:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:06:28,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:06:28,685 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:06:28,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:06:28,884 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:06:28,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:06:28,903 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:06:28,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:06:28 BoogieIcfgContainer [2023-11-19 04:06:28,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:06:28,910 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:06:28,910 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:06:28,922 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:06:28,922 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:06:28" (1/1) ... [2023-11-19 04:06:28,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:06:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 23 states and 36 transitions. [2023-11-19 04:06:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2023-11-19 04:06:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:06:28,984 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:06:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 23 states and 34 transitions. [2023-11-19 04:06:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2023-11-19 04:06:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:06:29,254 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:06:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2023-11-19 04:06:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2023-11-19 04:06:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:06:29,418 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:06:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 30 states and 53 transitions. [2023-11-19 04:06:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 53 transitions. [2023-11-19 04:06:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:06:29,988 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:30,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:30,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:06:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 34 states and 61 transitions. [2023-11-19 04:06:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 61 transitions. [2023-11-19 04:06:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:06:30,824 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:30,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:30,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:30,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:06:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 39 states and 72 transitions. [2023-11-19 04:06:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 72 transitions. [2023-11-19 04:06:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 04:06:31,731 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:31,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:06:31,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:06:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 41 states and 77 transitions. [2023-11-19 04:06:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 77 transitions. [2023-11-19 04:06:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:06:32,221 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:32,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:32,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:06:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 42 states and 80 transitions. [2023-11-19 04:06:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 80 transitions. [2023-11-19 04:06:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 04:06:32,416 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:32,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:32,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:32,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 04:06:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 46 states and 92 transitions. [2023-11-19 04:06:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 92 transitions. [2023-11-19 04:06:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:06:32,847 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:32,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:32,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:06:32,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 04:06:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 58 states and 154 transitions. [2023-11-19 04:06:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 154 transitions. [2023-11-19 04:06:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:06:34,713 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:34,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:06:34,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 04:06:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 60 states and 156 transitions. [2023-11-19 04:06:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 156 transitions. [2023-11-19 04:06:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 04:06:35,355 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:35,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:06:35,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 04:06:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 64 states and 174 transitions. [2023-11-19 04:06:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 174 transitions. [2023-11-19 04:06:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 04:06:36,056 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:36,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:36,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:06:36,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 04:06:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 69 states and 190 transitions. [2023-11-19 04:06:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 190 transitions. [2023-11-19 04:06:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 04:06:37,565 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:37,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 04:06:37,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 04:06:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 66 states and 174 transitions. [2023-11-19 04:06:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 174 transitions. [2023-11-19 04:06:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 04:06:39,255 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:39,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:39,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-19 04:06:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 69 states and 191 transitions. [2023-11-19 04:06:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 191 transitions. [2023-11-19 04:06:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:06:39,871 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:39,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:39,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 04:06:39,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 04:06:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 72 states and 206 transitions. [2023-11-19 04:06:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 206 transitions. [2023-11-19 04:06:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:06:41,637 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:41,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 04:06:41,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 04:06:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 72 states and 205 transitions. [2023-11-19 04:06:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 205 transitions. [2023-11-19 04:06:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:06:42,596 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:42,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:06:42,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 04:06:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 74 states and 213 transitions. [2023-11-19 04:06:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 213 transitions. [2023-11-19 04:06:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:06:42,970 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:42,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:43,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 04:06:43,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-19 04:06:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 76 states and 222 transitions. [2023-11-19 04:06:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 222 transitions. [2023-11-19 04:06:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 04:06:44,410 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:44,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:44,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:44,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 04:06:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 77 states and 227 transitions. [2023-11-19 04:06:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 227 transitions. [2023-11-19 04:06:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 04:06:44,576 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:44,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:06:44,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 04:06:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 78 states and 232 transitions. [2023-11-19 04:06:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 232 transitions. [2023-11-19 04:06:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 04:06:45,068 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:45,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:06:45,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 04:06:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 80 states and 240 transitions. [2023-11-19 04:06:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 240 transitions. [2023-11-19 04:06:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 04:06:45,301 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:45,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:45,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:06:45,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 04:06:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 84 states and 261 transitions. [2023-11-19 04:06:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 261 transitions. [2023-11-19 04:06:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 04:06:46,017 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:46,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:06:46,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 04:06:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 86 states and 263 transitions. [2023-11-19 04:06:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 263 transitions. [2023-11-19 04:06:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 04:06:46,862 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:46,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:46,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 20 proven. 112 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-19 04:06:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 94 states and 290 transitions. [2023-11-19 04:06:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 290 transitions. [2023-11-19 04:06:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 04:06:48,787 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:48,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:48,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:06:48,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 04:06:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 96 states and 292 transitions. [2023-11-19 04:06:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 292 transitions. [2023-11-19 04:06:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 04:06:49,589 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:49,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:06:49,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 20 proven. 112 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-19 04:06:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 100 states and 383 transitions. [2023-11-19 04:06:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 383 transitions. [2023-11-19 04:06:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 04:06:51,243 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:51,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 04:06:51,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 04:06:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 108 states and 428 transitions. [2023-11-19 04:06:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 428 transitions. [2023-11-19 04:06:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 04:06:54,944 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:54,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 04:06:54,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 04:06:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:06:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 118 states and 449 transitions. [2023-11-19 04:06:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 449 transitions. [2023-11-19 04:06:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 04:06:58,302 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:06:58,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:06:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:06:58,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 04:06:58,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:06:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 04:07:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 123 states and 471 transitions. [2023-11-19 04:07:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 471 transitions. [2023-11-19 04:07:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 04:07:00,998 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:01,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 04:07:01,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 04:07:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 125 states and 473 transitions. [2023-11-19 04:07:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 473 transitions. [2023-11-19 04:07:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 04:07:02,625 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:02,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 04:07:02,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 04:07:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 127 states and 475 transitions. [2023-11-19 04:07:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 475 transitions. [2023-11-19 04:07:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 04:07:04,371 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:04,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:04,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:07:04,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 04:07:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 130 states and 503 transitions. [2023-11-19 04:07:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 503 transitions. [2023-11-19 04:07:06,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 04:07:06,783 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:06,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:06,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 04:07:06,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 38 proven. 37 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 04:07:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 137 states and 536 transitions. [2023-11-19 04:07:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 536 transitions. [2023-11-19 04:07:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 04:07:10,099 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:10,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 04:07:10,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 38 proven. 37 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 04:07:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 139 states and 537 transitions. [2023-11-19 04:07:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 537 transitions. [2023-11-19 04:07:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 04:07:11,642 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:11,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 04:07:11,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 04:07:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 141 states and 538 transitions. [2023-11-19 04:07:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 538 transitions. [2023-11-19 04:07:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 04:07:13,035 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:13,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 04:07:13,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-19 04:07:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 145 states and 568 transitions. [2023-11-19 04:07:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 568 transitions. [2023-11-19 04:07:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 04:07:15,094 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:15,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 04:07:15,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 26 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-19 04:07:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:07:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 147 states and 582 transitions. [2023-11-19 04:07:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 582 transitions. [2023-11-19 04:07:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 04:07:17,173 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:07:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:07:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:07:17,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:07:17,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:07:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 55 proven. 13 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.