./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d28004f57c6988e792d07d7254dfd532aeffd19f38063d85c3bfa2c0f504914f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-11 23:57:53,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:57:53,673 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-11 23:57:53,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:57:53,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:57:53,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:57:53,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-11 23:57:53,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-11 23:57:53,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:57:53,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:57:53,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:57:53,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-11 23:57:53,737 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-11 23:57:53,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:57:53,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-11 23:57:53,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:57:53,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-11 23:57:53,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:57:53,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-11 23:57:53,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-11 23:57:53,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-11 23:57:53,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:57:53,743 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:57:53,744 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:57:53,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:57:53,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:57:53,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:57:53,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:57:53,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-11 23:57:53,747 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:57:53,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:57:53,749 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-11 23:57:53,749 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_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28004f57c6988e792d07d7254dfd532aeffd19f38063d85c3bfa2c0f504914f [2023-11-11 23:57:54,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:57:54,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:57:54,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:57:54,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:57:54,036 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:57:54,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/loop-simple/nested_2.c [2023-11-11 23:57:57,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:57:57,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:57:57,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/sv-benchmarks/c/loop-simple/nested_2.c [2023-11-11 23:57:57,407 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/data/a9916d0c4/68ccbb913248417499f608617e5008e6/FLAGeab9937e5 [2023-11-11 23:57:57,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/data/a9916d0c4/68ccbb913248417499f608617e5008e6 [2023-11-11 23:57:57,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:57:57,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:57:57,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:57:57,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:57:57,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:57:57,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca3adbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57, skipping insertion in model container [2023-11-11 23:57:57,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,480 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:57:57,673 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/sv-benchmarks/c/loop-simple/nested_2.c[730,743] [2023-11-11 23:57:57,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:57:57,690 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:57:57,709 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/sv-benchmarks/c/loop-simple/nested_2.c[730,743] [2023-11-11 23:57:57,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:57:57,726 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:57:57,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57 WrapperNode [2023-11-11 23:57:57,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:57:57,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:57:57,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:57:57,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:57:57,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,762 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-11-11 23:57:57,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:57:57,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:57:57,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:57:57,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:57:57,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:57:57,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:57:57,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:57:57,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:57:57,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:57" (1/1) ... [2023-11-11 23:57:57,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:57:57,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:57:57,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:57:57,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:57:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-11 23:57:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:57:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:57:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-11 23:57:57,958 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:57:57,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:57:58,134 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:57:58,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:57:58,176 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-11 23:57:58,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:58 BoogieIcfgContainer [2023-11-11 23:57:58,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:57:58,184 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:57:58,184 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:57:58,195 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:57:58,196 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:58" (1/1) ... [2023-11-11 23:57:58,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:57:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 8 states and 10 transitions. [2023-11-11 23:57:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-11-11 23:57:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-11 23:57:58,283 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:58,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2023-11-11 23:57:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-11-11 23:57:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-11 23:57:58,624 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2023-11-11 23:57:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2023-11-11 23:57:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-11 23:57:58,776 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:58,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2023-11-11 23:57:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2023-11-11 23:57:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-11 23:57:58,940 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-11 23:57:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 15 states and 23 transitions. [2023-11-11 23:57:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2023-11-11 23:57:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-11 23:57:59,464 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:59,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:57:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 16 states and 24 transitions. [2023-11-11 23:57:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 24 transitions. [2023-11-11 23:57:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-11 23:57:59,666 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:57:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 17 states and 25 transitions. [2023-11-11 23:57:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2023-11-11 23:57:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-11 23:57:59,919 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:58:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 18 states and 26 transitions. [2023-11-11 23:58:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2023-11-11 23:58:00,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-11 23:58:00,184 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:00,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:58:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2023-11-11 23:58:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2023-11-11 23:58:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-11 23:58:00,467 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:00,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-11 23:58:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 23 states and 33 transitions. [2023-11-11 23:58:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2023-11-11 23:58:00,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-11 23:58:00,996 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-11 23:58:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2023-11-11 23:58:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2023-11-11 23:58:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-11 23:58:01,192 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 65 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-11 23:58:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:01,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2023-11-11 23:58:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2023-11-11 23:58:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-11 23:58:01,398 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 75 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-11 23:58:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2023-11-11 23:58:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2023-11-11 23:58:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-11 23:58:01,615 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-11 23:58:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2023-11-11 23:58:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-11-11 23:58:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-11 23:58:01,843 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-11 23:58:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 43 transitions. [2023-11-11 23:58:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2023-11-11 23:58:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-11 23:58:02,558 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-11 23:58:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2023-11-11 23:58:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2023-11-11 23:58:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-11 23:58:02,792 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 116 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-11 23:58:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 33 states and 45 transitions. [2023-11-11 23:58:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2023-11-11 23:58:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-11 23:58:03,016 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-11 23:58:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2023-11-11 23:58:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2023-11-11 23:58:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-11 23:58:03,307 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 150 proven. 15 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-11 23:58:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 35 states and 46 transitions. [2023-11-11 23:58:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2023-11-11 23:58:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-11 23:58:03,582 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-11 23:58:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 39 states and 53 transitions. [2023-11-11 23:58:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2023-11-11 23:58:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-11 23:58:04,361 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:04,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 143 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-11 23:58:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 40 states and 54 transitions. [2023-11-11 23:58:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2023-11-11 23:58:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-11 23:58:04,603 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-11 23:58:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 41 states and 55 transitions. [2023-11-11 23:58:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2023-11-11 23:58:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-11 23:58:04,870 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:04,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 191 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-11 23:58:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 42 states and 56 transitions. [2023-11-11 23:58:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2023-11-11 23:58:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-11 23:58:05,144 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 215 proven. 15 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-11 23:58:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 43 states and 56 transitions. [2023-11-11 23:58:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2023-11-11 23:58:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-11 23:58:05,481 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:05,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-11 23:58:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 47 states and 62 transitions. [2023-11-11 23:58:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-11-11 23:58:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-11 23:58:06,305 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 187 proven. 3 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-11 23:58:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 48 states and 63 transitions. [2023-11-11 23:58:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2023-11-11 23:58:06,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-11 23:58:06,585 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 218 proven. 6 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-11 23:58:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 49 states and 64 transitions. [2023-11-11 23:58:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2023-11-11 23:58:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-11 23:58:06,850 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 249 proven. 10 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-11 23:58:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 50 states and 65 transitions. [2023-11-11 23:58:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2023-11-11 23:58:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-11 23:58:07,130 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 280 proven. 15 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-11 23:58:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 51 states and 65 transitions. [2023-11-11 23:58:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-11-11 23:58:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-11 23:58:07,480 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:07,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-11 23:58:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 52 states and 66 transitions. [2023-11-11 23:58:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-11-11 23:58:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-11 23:58:07,770 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-11 23:58:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 53 states and 67 transitions. [2023-11-11 23:58:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2023-11-11 23:58:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-11 23:58:08,034 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 181 proven. 10 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-11 23:58:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 54 states and 68 transitions. [2023-11-11 23:58:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2023-11-11 23:58:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-11 23:58:08,317 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 216 proven. 15 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-11 23:58:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 55 states and 68 transitions. [2023-11-11 23:58:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-11-11 23:58:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-11 23:58:08,678 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:58:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:58:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:58:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 777 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-11 23:58:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:58:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 53 states and 66 transitions. [2023-11-11 23:58:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2023-11-11 23:58:12,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-11 23:58:12,575 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 34 iterations. [2023-11-11 23:58:12,587 INFO L753 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2023-11-11 23:58:12,785 INFO L560 CodeCheckObserver]: Invariant with dag size 10 [2023-11-11 23:58:12,792 INFO L560 CodeCheckObserver]: Invariant with dag size 9 [2023-11-11 23:58:12,793 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:58:12,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:58:12 ImpRootNode [2023-11-11 23:58:12,793 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:58:12,794 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:58:12,794 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:58:12,794 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:58:12,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:58" (3/4) ... [2023-11-11 23:58:12,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-11 23:58:12,803 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-11 23:58:12,803 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-11 23:58:12,804 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-11 23:58:12,804 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-11 23:58:12,891 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:58:12,892 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/witness.yml [2023-11-11 23:58:12,892 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:58:12,893 INFO L158 Benchmark]: Toolchain (without parser) took 15456.00ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 114.4MB in the beginning and 111.2MB in the end (delta: 3.2MB). Peak memory consumption was 74.3MB. Max. memory is 16.1GB. [2023-11-11 23:58:12,893 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:58:12,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.31ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 104.2MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-11 23:58:12,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.01ms. Allocated memory is still 151.0MB. Free memory was 104.2MB in the beginning and 102.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:58:12,895 INFO L158 Benchmark]: Boogie Preprocessor took 29.72ms. Allocated memory is still 151.0MB. Free memory was 102.9MB in the beginning and 101.7MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-11 23:58:12,895 INFO L158 Benchmark]: RCFGBuilder took 386.91ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 92.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-11 23:58:12,896 INFO L158 Benchmark]: CodeCheck took 14609.77ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 92.2MB in the beginning and 115.3MB in the end (delta: -23.2MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2023-11-11 23:58:12,896 INFO L158 Benchmark]: Witness Printer took 98.04ms. Allocated memory is still 220.2MB. Free memory was 115.3MB in the beginning and 111.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-11 23:58:12,899 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, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 34, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 560 SdHoareTripleChecker+Valid, 11.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 203 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3479 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4834 IncrementalHoareTripleChecker+Invalid, 8313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3479 mSolverCounterUnsat, 99 mSDtfsCounter, 4834 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6913 GetRequests, 6527 SyntacticMatches, 146 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26575 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 977 NumberOfCodeBlocks, 977 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 1514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 2 PerfectInterpolantSequences, 8876/10593 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 - PositiveResult [Line: 26]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((a <= 4) || ((a <= 5) && (b <= 6))) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((a <= 5) || ((6 == a) && (6 == b))) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.31ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 104.2MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.01ms. Allocated memory is still 151.0MB. Free memory was 104.2MB in the beginning and 102.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.72ms. Allocated memory is still 151.0MB. Free memory was 102.9MB in the beginning and 101.7MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 386.91ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 92.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 14609.77ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 92.2MB in the beginning and 115.3MB in the end (delta: -23.2MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Witness Printer took 98.04ms. Allocated memory is still 220.2MB. Free memory was 115.3MB in the beginning and 111.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-11 23:58:12,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752200fb-9525-4235-bf2b-16678c7d1c90/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE