./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c5050f69dd0fe75249366946a38ba884fb5943ccf611397d2d01e0ccda347b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 00:50:43,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 00:50:43,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-12-03 00:50:43,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 00:50:43,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 00:50:43,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 00:50:43,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 00:50:43,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 00:50:43,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 00:50:43,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 00:50:43,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 00:50:43,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 00:50:43,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 00:50:43,997 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-03 00:50:43,998 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-03 00:50:43,998 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-03 00:50:43,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 00:50:43,999 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 00:50:44,000 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 00:50:44,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 00:50:44,001 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 00:50:44,002 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 00:50:44,002 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 00:50:44,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 00:50:44,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:50:44,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 00:50:44,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 00:50:44,004 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 00:50:44,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 00:50:44,005 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_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c5050f69dd0fe75249366946a38ba884fb5943ccf611397d2d01e0ccda347b5 [2023-12-03 00:50:44,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 00:50:44,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 00:50:44,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 00:50:44,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 00:50:44,256 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 00:50:44,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2023-12-03 00:50:46,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 00:50:47,170 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 00:50:47,171 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2023-12-03 00:50:47,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/data/f90a5bb88/e4c805db985b428ebfccc2760ebbe3f9/FLAG8d935b409 [2023-12-03 00:50:47,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/data/f90a5bb88/e4c805db985b428ebfccc2760ebbe3f9 [2023-12-03 00:50:47,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 00:50:47,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 00:50:47,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 00:50:47,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 00:50:47,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 00:50:47,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7bf2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47, skipping insertion in model container [2023-12-03 00:50:47,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 00:50:47,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:50:47,374 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 00:50:47,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:50:47,395 INFO L206 MainTranslator]: Completed translation [2023-12-03 00:50:47,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47 WrapperNode [2023-12-03 00:50:47,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 00:50:47,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 00:50:47,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 00:50:47,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 00:50:47,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,422 INFO L138 Inliner]: procedures = 9, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-12-03 00:50:47,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 00:50:47,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 00:50:47,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 00:50:47,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 00:50:47,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 00:50:47,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 00:50:47,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 00:50:47,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 00:50:47,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:50:47,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 00:50:47,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 00:50:47,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 00:50:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-03 00:50:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-03 00:50:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 00:50:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 00:50:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 00:50:47,561 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 00:50:47,563 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 00:50:47,674 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 00:50:47,696 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 00:50:47,697 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 00:50:47,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:50:47 BoogieIcfgContainer [2023-12-03 00:50:47,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 00:50:47,699 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 00:50:47,700 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 00:50:47,710 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 00:50:47,710 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:50:47" (1/1) ... [2023-12-03 00:50:47,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 00:50:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2023-12-03 00:50:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-03 00:50:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 00:50:47,768 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2023-12-03 00:50:47,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-12-03 00:50:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 00:50:47,942 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2023-12-03 00:50:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-03 00:50:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 00:50:48,081 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 21 states and 26 transitions. [2023-12-03 00:50:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-03 00:50:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 00:50:48,381 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 22 states and 28 transitions. [2023-12-03 00:50:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-03 00:50:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:50:48,444 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 24 states and 33 transitions. [2023-12-03 00:50:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2023-12-03 00:50:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:50:48,559 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:48,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 26 states and 35 transitions. [2023-12-03 00:50:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-12-03 00:50:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 00:50:48,678 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:48,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 30 states and 40 transitions. [2023-12-03 00:50:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2023-12-03 00:50:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 00:50:49,142 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:49,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-03 00:50:49,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 32 states and 43 transitions. [2023-12-03 00:50:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-03 00:50:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 00:50:49,296 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-03 00:50:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 41 states and 55 transitions. [2023-12-03 00:50:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2023-12-03 00:50:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-03 00:50:49,956 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-03 00:50:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 40 states and 54 transitions. [2023-12-03 00:50:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2023-12-03 00:50:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-03 00:50:50,295 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 42 states and 59 transitions. [2023-12-03 00:50:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2023-12-03 00:50:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-03 00:50:50,807 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 46 states and 69 transitions. [2023-12-03 00:50:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2023-12-03 00:50:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-03 00:50:51,238 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 00:50:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 48 states and 72 transitions. [2023-12-03 00:50:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 72 transitions. [2023-12-03 00:50:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-03 00:50:51,456 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 49 states and 72 transitions. [2023-12-03 00:50:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 72 transitions. [2023-12-03 00:50:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-03 00:50:51,719 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:51,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-03 00:50:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 51 states and 73 transitions. [2023-12-03 00:50:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-03 00:50:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-03 00:50:51,931 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:51,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 55 states and 83 transitions. [2023-12-03 00:50:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions. [2023-12-03 00:50:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-03 00:50:52,411 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 56 states and 84 transitions. [2023-12-03 00:50:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 84 transitions. [2023-12-03 00:50:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-03 00:50:52,824 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-03 00:50:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 58 states and 86 transitions. [2023-12-03 00:50:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions. [2023-12-03 00:50:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-03 00:50:53,066 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:53,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-03 00:50:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 60 states and 87 transitions. [2023-12-03 00:50:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2023-12-03 00:50:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-03 00:50:53,273 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:53,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 64 states and 97 transitions. [2023-12-03 00:50:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 97 transitions. [2023-12-03 00:50:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-03 00:50:53,774 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:53,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 65 states and 98 transitions. [2023-12-03 00:50:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 98 transitions. [2023-12-03 00:50:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-03 00:50:54,284 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-03 00:50:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 67 states and 100 transitions. [2023-12-03 00:50:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 100 transitions. [2023-12-03 00:50:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-03 00:50:54,495 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:54,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-03 00:50:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 69 states and 101 transitions. [2023-12-03 00:50:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2023-12-03 00:50:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-03 00:50:54,725 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:54,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 73 states and 111 transitions. [2023-12-03 00:50:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2023-12-03 00:50:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-03 00:50:55,306 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:55,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-03 00:50:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 75 states and 114 transitions. [2023-12-03 00:50:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 114 transitions. [2023-12-03 00:50:55,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-03 00:50:55,512 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 77 states and 119 transitions. [2023-12-03 00:50:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 119 transitions. [2023-12-03 00:50:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-03 00:50:56,850 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:56,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-03 00:50:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 79 states and 122 transitions. [2023-12-03 00:50:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 122 transitions. [2023-12-03 00:50:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-03 00:50:57,150 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-03 00:50:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 80 states and 123 transitions. [2023-12-03 00:50:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions. [2023-12-03 00:50:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-03 00:50:57,491 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 84 states and 133 transitions. [2023-12-03 00:50:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 133 transitions. [2023-12-03 00:50:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-03 00:50:58,269 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:58,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:50:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 50 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 00:50:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:50:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 85 states and 133 transitions. [2023-12-03 00:50:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 133 transitions. [2023-12-03 00:50:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-03 00:50:58,932 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:50:58,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:50:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 00:50:58,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 00:50:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 00:50:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 00:50:59,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 00:50:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 00:50:59,041 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 31 iterations. [2023-12-03 00:50:59,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 12:50:59 ImpRootNode [2023-12-03 00:50:59,071 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 00:50:59,072 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 00:50:59,072 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 00:50:59,072 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 00:50:59,073 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:50:47" (3/4) ... [2023-12-03 00:50:59,073 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-03 00:50:59,120 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 00:50:59,121 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 00:50:59,121 INFO L158 Benchmark]: Toolchain (without parser) took 11925.05ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 138.9MB in the beginning and 139.0MB in the end (delta: -94.1kB). Peak memory consumption was 84.8MB. Max. memory is 16.1GB. [2023-12-03 00:50:59,122 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 123.7MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 00:50:59,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.82ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 129.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 00:50:59,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.32ms. Allocated memory is still 180.4MB. Free memory was 129.2MB in the beginning and 127.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 00:50:59,123 INFO L158 Benchmark]: Boogie Preprocessor took 19.84ms. Allocated memory is still 180.4MB. Free memory was 127.8MB in the beginning and 126.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 00:50:59,124 INFO L158 Benchmark]: RCFGBuilder took 255.55ms. Allocated memory is still 180.4MB. Free memory was 126.4MB in the beginning and 116.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 00:50:59,124 INFO L158 Benchmark]: CodeCheck took 11371.67ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 116.0MB in the beginning and 141.1MB in the end (delta: -25.2MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2023-12-03 00:50:59,125 INFO L158 Benchmark]: Witness Printer took 49.11ms. Allocated memory is still 262.1MB. Free memory was 141.1MB in the beginning and 139.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 00:50:59,127 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 11.3s, OverallIterations: 31, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2366 SdHoareTripleChecker+Valid, 10.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2116 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 1428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7722 IncrementalHoareTripleChecker+Invalid, 9150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1428 mSolverCounterUnsat, 84 mSDtfsCounter, 7722 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3442 GetRequests, 2976 SyntacticMatches, 244 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28160 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 470 NumberOfCodeBlocks, 470 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 2392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 17 PerfectInterpolantSequences, 376/647 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] int* p = malloc(10 * sizeof(int)); [L8] int i = 0; VAL [i=0, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=0, p={5053:0}] [L9] p[i] = 1 VAL [i=0, p={5053:0}] [L10] COND FALSE !(i == 5) VAL [i=0, p={5053:0}] [L8] i++ VAL [i=1, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=1, p={5053:0}] [L9] p[i] = 1 VAL [i=1, p={5053:0}] [L10] COND FALSE !(i == 5) VAL [i=1, p={5053:0}] [L8] i++ VAL [i=2, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=2, p={5053:0}] [L9] p[i] = 1 VAL [i=2, p={5053:0}] [L10] COND FALSE !(i == 5) VAL [i=2, p={5053:0}] [L8] i++ VAL [i=3, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=3, p={5053:0}] [L9] p[i] = 1 VAL [i=3, p={5053:0}] [L10] COND FALSE !(i == 5) VAL [i=3, p={5053:0}] [L8] i++ VAL [i=4, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=4, p={5053:0}] [L9] p[i] = 1 VAL [i=4, p={5053:0}] [L10] COND FALSE !(i == 5) VAL [i=4, p={5053:0}] [L8] i++ VAL [i=5, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=5, p={5053:0}] [L9] p[i] = 1 VAL [i=5, p={5053:0}] [L10] COND TRUE i == 5 VAL [i=5, p={5053:0}] [L11] free(p) VAL [i=5, p={5053:0}] [L11] free(p) VAL [i=5, p={5053:0}] [L11] free(p) [L8] i++ VAL [i=6, p={5053:0}] [L8] COND TRUE i < 10 VAL [i=6, p={5053:0}] [L9] p[i] = 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 123.7MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.82ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 129.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.32ms. Allocated memory is still 180.4MB. Free memory was 129.2MB in the beginning and 127.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.84ms. Allocated memory is still 180.4MB. Free memory was 127.8MB in the beginning and 126.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.55ms. Allocated memory is still 180.4MB. Free memory was 126.4MB in the beginning and 116.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 11371.67ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 116.0MB in the beginning and 141.1MB in the end (delta: -25.2MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * Witness Printer took 49.11ms. Allocated memory is still 262.1MB. Free memory was 141.1MB in the beginning and 139.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-12-03 00:50:59,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df1fb91-f79b-46d9-b61e-d9439ee4cc8f/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)