./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2 --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 e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:27:13,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:27:13,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-21 18:27:13,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:27:13,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:27:13,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:27:13,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:27:13,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:27:13,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:27:13,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:27:13,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:27:13,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:27:13,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:27:13,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:27:13,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:27:13,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:27:13,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:27:13,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:27:13,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:27:13,566 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:27:13,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:27:13,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:27:13,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:27:13,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:27:13,569 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:27:13,569 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:27:13,569 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:27:13,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:27:13,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:27:13,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:27:13,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:27:13,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:27:13,573 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:27:13,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:27:13,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:27:13,573 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_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 [2023-11-21 18:27:13,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:27:13,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:27:13,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:27:13,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:27:13,910 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:27:13,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2023-11-21 18:27:17,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:27:17,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:27:17,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2023-11-21 18:27:17,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/data/8b8397758/0db8c949f9f443d49a8fba140603a050/FLAGa408d8998 [2023-11-21 18:27:17,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/data/8b8397758/0db8c949f9f443d49a8fba140603a050 [2023-11-21 18:27:17,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:27:17,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:27:17,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:27:17,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:27:17,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:27:17,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7405a855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17, skipping insertion in model container [2023-11-21 18:27:17,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:27:17,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:27:17,585 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:27:17,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:27:17,630 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:27:17,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17 WrapperNode [2023-11-21 18:27:17,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:27:17,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:27:17,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:27:17,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:27:17,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,686 INFO L138 Inliner]: procedures = 16, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2023-11-21 18:27:17,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:27:17,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:27:17,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:27:17,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:27:17,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:27:17,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:27:17,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:27:17,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:27:17,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:27:17" (1/1) ... [2023-11-21 18:27:17,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:27:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:27:17,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:27:17,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6ba3d71-b6e2-490d-87db-1e7adc395341/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:27:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:27:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2023-11-21 18:27:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2023-11-21 18:27:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:27:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:27:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:27:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:27:17,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:27:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:27:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 18:27:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 18:27:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:27:17,915 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:27:17,918 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:27:18,553 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:27:18,602 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:27:18,611 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 18:27:18,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:27:18 BoogieIcfgContainer [2023-11-21 18:27:18,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:27:18,615 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:27:18,616 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:27:18,627 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:27:18,628 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:27:18" (1/1) ... [2023-11-21 18:27:18,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:27:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:27:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 138 states and 142 transitions. [2023-11-21 18:27:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2023-11-21 18:27:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 18:27:18,736 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:27:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:27:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:27:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:27:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:27:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 141 states and 145 transitions. [2023-11-21 18:27:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2023-11-21 18:27:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:27:19,503 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:27:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:27:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:27:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:27:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:27:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 142 states and 146 transitions. [2023-11-21 18:27:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2023-11-21 18:27:19,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:27:19,891 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:27:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:27:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:27:20,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-21 18:27:20,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:27:20,136 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-11-21 18:27:20,138 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 65 treesize of output 40 [2023-11-21 18:27:20,156 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 26 treesize of output 24 [2023-11-21 18:27:20,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:27:20,284 INFO L349 Elim1Store]: treesize reduction 137, result has 27.5 percent of original size [2023-11-21 18:27:20,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 59 treesize of output 115 [2023-11-21 18:27:20,396 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 8 treesize of output 7 [2023-11-21 18:27:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:27:20,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 18:27:20,458 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 18:27:20,460 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2023-11-21 18:27:20,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 16 [2023-11-21 18:28:01,108 WARN L293 SmtUtils]: Spent 40.32s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)