./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi --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 2d26d8e14d33b8c29eaf9ffa7603dd26966f962451e6c0726b154a73bf65f3d2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:09:40,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:09:40,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 23:09:40,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:09:40,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:09:40,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:09:40,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:09:40,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:09:40,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:09:40,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:09:40,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:09:40,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:09:40,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:09:40,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:09:40,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:09:40,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:09:40,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:09:40,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:09:40,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:09:40,805 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:09:40,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:09:40,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:09:40,807 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:09:40,807 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:09:40,808 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:09:40,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:09:40,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:09:40,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:09:40,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:09:40,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:09:40,812 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:09:40,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:09:40,813 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:09:40,813 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_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d26d8e14d33b8c29eaf9ffa7603dd26966f962451e6c0726b154a73bf65f3d2 [2023-11-24 23:09:41,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:09:41,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:09:41,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:09:41,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:09:41,148 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:09:41,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c [2023-11-24 23:09:44,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:09:44,567 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:09:44,568 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c [2023-11-24 23:09:44,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/data/cf1334149/9eb262827e1a4c30aba8e7fa7b9ab0a9/FLAGe8ff44eb2 [2023-11-24 23:09:44,589 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/data/cf1334149/9eb262827e1a4c30aba8e7fa7b9ab0a9 [2023-11-24 23:09:44,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:09:44,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:09:44,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:09:44,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:09:44,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:09:44,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569f26d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44, skipping insertion in model container [2023-11-24 23:09:44,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:09:44,786 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_e9591944-2043-4fae-a618-fea4892bae60/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c[489,502] [2023-11-24 23:09:44,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:09:44,814 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:09:44,827 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_e9591944-2043-4fae-a618-fea4892bae60/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound50.c[489,502] [2023-11-24 23:09:44,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:09:44,850 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:09:44,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44 WrapperNode [2023-11-24 23:09:44,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:09:44,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:09:44,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:09:44,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:09:44,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,887 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-11-24 23:09:44,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:09:44,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:09:44,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:09:44,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:09:44,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:09:44,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:09:44,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:09:44,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:09:44,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:09:44" (1/1) ... [2023-11-24 23:09:44,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:09:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:09:44,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:09:44,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9591944-2043-4fae-a618-fea4892bae60/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:09:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:09:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:09:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:09:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:09:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:09:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:09:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:09:45,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:09:45,104 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:09:45,107 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:09:45,372 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:09:45,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:09:45,460 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:09:45,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:09:45 BoogieIcfgContainer [2023-11-24 23:09:45,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:09:45,463 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:09:45,464 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:09:45,480 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:09:45,480 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:09:45" (1/1) ... [2023-11-24 23:09:45,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:09:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2023-11-24 23:09:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2023-11-24 23:09:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:09:45,588 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:09:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 24 states and 32 transitions. [2023-11-24 23:09:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-11-24 23:09:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:09:45,872 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:09:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 26 states and 35 transitions. [2023-11-24 23:09:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-24 23:09:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:09:46,169 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:46,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:46,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 23:09:46,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:09:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 31 states and 50 transitions. [2023-11-24 23:09:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2023-11-24 23:09:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:09:46,724 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:46,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 23:09:46,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:09:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 38 states and 70 transitions. [2023-11-24 23:09:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2023-11-24 23:09:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:09:48,360 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:48,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 23:09:48,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:09:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 41 states and 77 transitions. [2023-11-24 23:09:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 77 transitions. [2023-11-24 23:09:50,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:09:50,255 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:50,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 23:09:50,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:09:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 46 states and 90 transitions. [2023-11-24 23:09:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 90 transitions. [2023-11-24 23:09:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:09:52,818 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:52,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:52,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:09:52,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:09:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 47 states and 91 transitions. [2023-11-24 23:09:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 91 transitions. [2023-11-24 23:09:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:09:53,069 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:53,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:09:53,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:09:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 57 states and 139 transitions. [2023-11-24 23:09:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 139 transitions. [2023-11-24 23:09:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:09:55,912 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:55,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:09:55,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:09:58,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 62 states and 162 transitions. [2023-11-24 23:09:58,554 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 162 transitions. [2023-11-24 23:09:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:09:58,556 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:58,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:09:58,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:09:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:09:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 64 states and 164 transitions. [2023-11-24 23:09:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 164 transitions. [2023-11-24 23:09:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:09:59,522 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:09:59,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:09:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:09:59,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 23:09:59,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:09:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:10:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 68 states and 180 transitions. [2023-11-24 23:10:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 180 transitions. [2023-11-24 23:10:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:10:01,441 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:01,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-24 23:10:01,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:10:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 73 states and 207 transitions. [2023-11-24 23:10:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 207 transitions. [2023-11-24 23:10:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:10:07,666 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:07,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:07,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:10:07,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-24 23:10:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 76 states and 214 transitions. [2023-11-24 23:10:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 214 transitions. [2023-11-24 23:10:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:10:09,885 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:09,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 23:10:09,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:10:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 79 states and 227 transitions. [2023-11-24 23:10:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 227 transitions. [2023-11-24 23:10:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:10:14,130 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:14,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:10:14,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:10:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 84 states and 255 transitions. [2023-11-24 23:10:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 255 transitions. [2023-11-24 23:10:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:10:21,012 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:21,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:10:21,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:10:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 88 states and 268 transitions. [2023-11-24 23:10:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 268 transitions. [2023-11-24 23:10:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:10:24,659 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:24,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:10:24,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:10:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 90 states and 271 transitions. [2023-11-24 23:10:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 271 transitions. [2023-11-24 23:10:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:10:27,530 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:27,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:27,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:10:27,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:10:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 92 states and 279 transitions. [2023-11-24 23:10:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 279 transitions. [2023-11-24 23:10:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:10:29,354 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:29,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:10:29,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:10:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 94 states and 281 transitions. [2023-11-24 23:10:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 281 transitions. [2023-11-24 23:10:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-24 23:10:31,307 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:31,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:10:31,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 23:10:31,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:10:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.