./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635e58724a56c62caeff3bee7749decbe4fed7f75c2f747c3a69f15f74dc7ff3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:15:50,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:15:50,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:15:50,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:15:50,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:15:50,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:15:50,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:15:50,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:15:50,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:15:50,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:15:50,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:15:50,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:15:50,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:15:50,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:15:50,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:15:50,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:15:50,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:15:50,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:15:50,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:15:50,293 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:15:50,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:15:50,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:15:50,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:15:50,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:15:50,296 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:15:50,296 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:15:50,297 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:15:50,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:15:50,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:15:50,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:15:50,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:15:50,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:15:50,300 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:15:50,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:15:50,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:15:50,301 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_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635e58724a56c62caeff3bee7749decbe4fed7f75c2f747c3a69f15f74dc7ff3 [2023-11-23 20:15:50,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:15:50,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:15:50,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:15:50,646 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:15:50,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:15:50,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c [2023-11-23 20:15:53,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:15:54,014 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:15:54,015 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c [2023-11-23 20:15:54,029 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/data/f39133525/b28e98a33c1741d7bf8609f294e1aca0/FLAG6bf8dd6ce [2023-11-23 20:15:54,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/data/f39133525/b28e98a33c1741d7bf8609f294e1aca0 [2023-11-23 20:15:54,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:15:54,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:15:54,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:15:54,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:15:54,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:15:54,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565c079f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54, skipping insertion in model container [2023-11-23 20:15:54,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:15:54,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:15:54,329 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:15:54,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:15:54,379 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:15:54,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54 WrapperNode [2023-11-23 20:15:54,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:15:54,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:15:54,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:15:54,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:15:54,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,433 INFO L138 Inliner]: procedures = 16, calls = 88, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 143 [2023-11-23 20:15:54,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:15:54,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:15:54,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:15:54,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:15:54,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:15:54,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:15:54,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:15:54,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:15:54,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:15:54" (1/1) ... [2023-11-23 20:15:54,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:15:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:15:54,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:15:54,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74d71dfa-980f-43ec-b7b6-e2a96b8ef246/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:15:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:15:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2023-11-23 20:15:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2023-11-23 20:15:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:15:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:15:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:15:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:15:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:15:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:15:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:15:54,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:15:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:15:54,657 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:15:54,659 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:15:55,446 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:15:55,507 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:15:55,507 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:15:55,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:55 BoogieIcfgContainer [2023-11-23 20:15:55,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:15:55,510 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:15:55,511 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:15:55,522 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:15:55,523 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:15:55" (1/1) ... [2023-11-23 20:15:55,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:15:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 222 states and 226 transitions. [2023-11-23 20:15:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2023-11-23 20:15:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:15:55,622 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:56,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 225 states and 229 transitions. [2023-11-23 20:15:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 229 transitions. [2023-11-23 20:15:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:15:56,609 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:56,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 226 states and 230 transitions. [2023-11-23 20:15:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 230 transitions. [2023-11-23 20:15:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:15:57,045 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:57,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 20:15:57,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:15:57,216 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-11-23 20:15:57,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-11-23 20:15:57,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:15:57,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-11-23 20:15:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:15:57,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:15:57,271 INFO L349 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2023-11-23 20:15:57,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 36 [2023-11-23 20:15:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:15:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:15:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 227 states and 231 transitions. [2023-11-23 20:15:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2023-11-23 20:15:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:15:57,546 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:15:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:15:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:15:57,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 20:15:57,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:15:57,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:15:59,396 INFO L349 Elim1Store]: treesize reduction 509, result has 32.8 percent of original size [2023-11-23 20:15:59,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 1570 treesize of output 1402 [2023-11-23 20:15:59,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-11-23 20:15:59,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-11-23 20:16:00,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-11-23 20:16:00,890 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:00,893 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 425 [2023-11-23 20:16:01,294 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:01,297 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2023-11-23 20:16:03,272 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:03,280 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 609 [2023-11-23 20:16:04,020 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:04,032 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1284 [2023-11-23 20:16:09,850 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:09,855 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 876 [2023-11-23 20:16:11,665 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:11,675 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1640 [2023-11-23 20:16:15,398 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:15,400 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2023-11-23 20:16:15,581 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:15,591 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1633 [2023-11-23 20:16:18,450 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:18,460 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1405 [2023-11-23 20:16:20,581 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:20,586 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 851 [2023-11-23 20:16:21,902 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:21,916 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1456 [2023-11-23 20:16:24,277 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:24,285 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2230 [2023-11-23 20:16:26,458 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:26,460 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 416 [2023-11-23 20:16:26,702 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:26,714 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2598 [2023-11-23 20:16:38,701 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:38,703 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 600 [2023-11-23 20:16:40,456 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:16:40,459 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 781 [2023-11-23 20:16:41,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23172 treesize of output 22834