./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:51:29,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:51:29,220 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-21 18:51:29,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:51:29,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:51:29,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:51:29,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:51:29,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:51:29,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:51:29,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:51:29,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:51:29,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:51:29,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:51:29,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:51:29,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:51:29,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:51:29,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:51:29,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:51:29,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:51:29,300 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:51:29,301 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:51:29,301 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:51:29,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:51:29,302 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:51:29,303 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:51:29,303 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:51:29,304 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:51:29,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:51:29,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:51:29,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:51:29,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:51:29,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:51:29,307 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:51:29,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:51:29,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:51:29,307 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_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 [2023-11-21 18:51:29,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:51:29,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:51:29,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:51:29,668 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:51:29,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:51:29,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2023-11-21 18:51:32,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:51:32,940 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:51:32,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2023-11-21 18:51:32,951 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/data/d01802547/213241c5bd34406eaedcfd87125e32cd/FLAG8dfa3e2c4 [2023-11-21 18:51:32,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/data/d01802547/213241c5bd34406eaedcfd87125e32cd [2023-11-21 18:51:32,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:51:32,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:51:32,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:51:32,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:51:32,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:51:32,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:51:32" (1/1) ... [2023-11-21 18:51:32,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39022733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:32, skipping insertion in model container [2023-11-21 18:51:33,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:51:32" (1/1) ... [2023-11-21 18:51:33,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:51:33,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:51:33,277 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:51:33,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:51:33,359 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:51:33,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33 WrapperNode [2023-11-21 18:51:33,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:51:33,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:51:33,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:51:33,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:51:33,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,446 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2023-11-21 18:51:33,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:51:33,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:51:33,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:51:33,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:51:33,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:51:33,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:51:33,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:51:33,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:51:33,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:33" (1/1) ... [2023-11-21 18:51:33,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:51:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:51:33,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:51:33,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c11846fd-54a8-48df-a084-cade5dd6760d/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:51:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:51:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:51:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:51:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:51:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 18:51:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 18:51:33,626 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:51:33,629 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:51:34,089 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:51:34,156 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:51:34,163 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 18:51:34,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:34 BoogieIcfgContainer [2023-11-21 18:51:34,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:51:34,169 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:51:34,170 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:51:34,182 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:51:34,183 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:34" (1/1) ... [2023-11-21 18:51:34,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:51:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 130 states and 133 transitions. [2023-11-21 18:51:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2023-11-21 18:51:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 18:51:34,262 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:34,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 132 states and 135 transitions. [2023-11-21 18:51:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2023-11-21 18:51:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 18:51:34,516 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 135 states and 139 transitions. [2023-11-21 18:51:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2023-11-21 18:51:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 18:51:34,618 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:34,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 134 states and 138 transitions. [2023-11-21 18:51:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2023-11-21 18:51:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:51:34,647 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:34,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:34,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:34,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 139 states and 146 transitions. [2023-11-21 18:51:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2023-11-21 18:51:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:51:34,937 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:34,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:34,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 140 states and 147 transitions. [2023-11-21 18:51:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 147 transitions. [2023-11-21 18:51:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:51:34,992 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:34,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 141 states and 148 transitions. [2023-11-21 18:51:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2023-11-21 18:51:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:51:35,047 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 140 states and 147 transitions. [2023-11-21 18:51:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 147 transitions. [2023-11-21 18:51:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:51:35,078 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 142 states and 149 transitions. [2023-11-21 18:51:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2023-11-21 18:51:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 18:51:35,178 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 150 states and 158 transitions. [2023-11-21 18:51:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2023-11-21 18:51:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 18:51:35,464 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 158 states and 167 transitions. [2023-11-21 18:51:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 167 transitions. [2023-11-21 18:51:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 18:51:35,707 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 159 states and 169 transitions. [2023-11-21 18:51:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2023-11-21 18:51:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 18:51:35,816 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 161 states and 172 transitions. [2023-11-21 18:51:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 172 transitions. [2023-11-21 18:51:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 18:51:35,926 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 160 states and 171 transitions. [2023-11-21 18:51:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2023-11-21 18:51:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 18:51:35,958 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:35,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:35,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 163 states and 174 transitions. [2023-11-21 18:51:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2023-11-21 18:51:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 18:51:36,042 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 164 states and 175 transitions. [2023-11-21 18:51:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2023-11-21 18:51:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 18:51:36,109 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 165 states and 176 transitions. [2023-11-21 18:51:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2023-11-21 18:51:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 18:51:36,178 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 173 states and 184 transitions. [2023-11-21 18:51:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 184 transitions. [2023-11-21 18:51:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 18:51:36,430 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 181 states and 193 transitions. [2023-11-21 18:51:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2023-11-21 18:51:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 18:51:36,652 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 180 states and 192 transitions. [2023-11-21 18:51:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2023-11-21 18:51:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 18:51:36,691 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 182 states and 194 transitions. [2023-11-21 18:51:36,859 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2023-11-21 18:51:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 18:51:36,860 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:36,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:36,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:51:36,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 186 states and 199 transitions. [2023-11-21 18:51:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2023-11-21 18:51:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 18:51:37,114 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:37,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:51:37,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 190 states and 204 transitions. [2023-11-21 18:51:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2023-11-21 18:51:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 18:51:37,399 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:37,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:37,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 193 states and 210 transitions. [2023-11-21 18:51:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2023-11-21 18:51:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 18:51:37,504 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:37,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:37,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 219 states and 242 transitions. [2023-11-21 18:51:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 242 transitions. [2023-11-21 18:51:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 18:51:38,038 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:38,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:38,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 220 states and 243 transitions. [2023-11-21 18:51:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 243 transitions. [2023-11-21 18:51:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 18:51:38,134 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:38,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:38,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 247 states and 276 transitions. [2023-11-21 18:51:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2023-11-21 18:51:38,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 18:51:38,832 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:38,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:38,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:38,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 246 states and 275 transitions. [2023-11-21 18:51:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2023-11-21 18:51:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 18:51:38,885 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:38,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:38,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 249 states and 281 transitions. [2023-11-21 18:51:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 281 transitions. [2023-11-21 18:51:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 18:51:39,264 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:39,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:39,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:39,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 251 states and 283 transitions. [2023-11-21 18:51:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 283 transitions. [2023-11-21 18:51:39,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 18:51:39,752 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:39,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:39,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 255 states and 290 transitions. [2023-11-21 18:51:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2023-11-21 18:51:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 18:51:40,226 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:40,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:40,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:40,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 258 states and 293 transitions. [2023-11-21 18:51:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 293 transitions. [2023-11-21 18:51:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 18:51:40,389 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:40,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:40,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:40,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 257 states and 292 transitions. [2023-11-21 18:51:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 292 transitions. [2023-11-21 18:51:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 18:51:40,427 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:40,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:40,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 258 states and 293 transitions. [2023-11-21 18:51:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 293 transitions. [2023-11-21 18:51:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 18:51:40,516 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:40,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:40,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:51:40,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 264 states and 301 transitions. [2023-11-21 18:51:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 301 transitions. [2023-11-21 18:51:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-21 18:51:41,019 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:41,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:41,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 265 states and 303 transitions. [2023-11-21 18:51:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 303 transitions. [2023-11-21 18:51:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 18:51:41,160 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:41,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:41,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 267 states and 305 transitions. [2023-11-21 18:51:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 305 transitions. [2023-11-21 18:51:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 18:51:41,345 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:41,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:41,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 275 states and 316 transitions. [2023-11-21 18:51:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 316 transitions. [2023-11-21 18:51:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 18:51:41,816 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:41,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:41,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 287 states and 334 transitions. [2023-11-21 18:51:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 334 transitions. [2023-11-21 18:51:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 18:51:42,681 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:42,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:42,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 296 states and 346 transitions. [2023-11-21 18:51:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 346 transitions. [2023-11-21 18:51:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 18:51:43,259 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:43,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:51:43,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 308 states and 367 transitions. [2023-11-21 18:51:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 367 transitions. [2023-11-21 18:51:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 18:51:44,407 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:44,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:44,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 307 states and 366 transitions. [2023-11-21 18:51:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 366 transitions. [2023-11-21 18:51:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 18:51:44,455 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:44,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:44,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:44,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 312 states and 372 transitions. [2023-11-21 18:51:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 372 transitions. [2023-11-21 18:51:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 18:51:45,212 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:45,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:45,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:51:45,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 315 states and 375 transitions. [2023-11-21 18:51:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 375 transitions. [2023-11-21 18:51:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-21 18:51:46,080 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:46,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:46,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:47,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-21 18:51:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 321 states and 382 transitions. [2023-11-21 18:51:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 382 transitions. [2023-11-21 18:51:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 18:51:48,517 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:48,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:51:48,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 326 states and 390 transitions. [2023-11-21 18:51:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 390 transitions. [2023-11-21 18:51:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-21 18:51:49,590 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:49,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:49,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 333 states and 398 transitions. [2023-11-21 18:51:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 398 transitions. [2023-11-21 18:51:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 18:51:50,652 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:50,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:50,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:50,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 332 states and 397 transitions. [2023-11-21 18:51:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 397 transitions. [2023-11-21 18:51:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-21 18:51:50,698 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:50,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:50,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:50,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 337 states and 404 transitions. [2023-11-21 18:51:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 404 transitions. [2023-11-21 18:51:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 18:51:51,143 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:51,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:51,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:51,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 346 states and 414 transitions. [2023-11-21 18:51:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 414 transitions. [2023-11-21 18:51:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 18:51:52,520 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:52,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:52,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 352 states and 422 transitions. [2023-11-21 18:51:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 422 transitions. [2023-11-21 18:51:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 18:51:53,299 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:53,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:53,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:53,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 362 states and 433 transitions. [2023-11-21 18:51:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 433 transitions. [2023-11-21 18:51:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 18:51:54,292 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:54,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:54,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 369 states and 442 transitions. [2023-11-21 18:51:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 442 transitions. [2023-11-21 18:51:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 18:51:55,186 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:55,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:55,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:55,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 368 states and 441 transitions. [2023-11-21 18:51:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2023-11-21 18:51:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 18:51:55,984 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:56,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:56,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 367 states and 440 transitions. [2023-11-21 18:51:56,832 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 440 transitions. [2023-11-21 18:51:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 18:51:56,833 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:56,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:51:56,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 376 states and 452 transitions. [2023-11-21 18:51:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 452 transitions. [2023-11-21 18:51:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 18:51:57,845 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:57,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:57,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 375 states and 451 transitions. [2023-11-21 18:51:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 451 transitions. [2023-11-21 18:51:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 18:51:58,522 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:58,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 18:51:58,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:51:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 381 states and 457 transitions. [2023-11-21 18:51:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 457 transitions. [2023-11-21 18:51:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 18:51:59,358 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:59,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:51:59,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:51:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 380 states and 456 transitions. [2023-11-21 18:51:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 456 transitions. [2023-11-21 18:51:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 18:51:59,413 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:59,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:51:59,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:51:59,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:51:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 18:52:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 382 states and 462 transitions. [2023-11-21 18:52:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 462 transitions. [2023-11-21 18:52:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 18:52:00,143 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:00,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:00,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 381 states and 461 transitions. [2023-11-21 18:52:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 461 transitions. [2023-11-21 18:52:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 18:52:01,425 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:01,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:52:01,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:52:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 383 states and 464 transitions. [2023-11-21 18:52:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 464 transitions. [2023-11-21 18:52:02,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 18:52:02,189 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:02,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:02,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:02,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 382 states and 463 transitions. [2023-11-21 18:52:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 463 transitions. [2023-11-21 18:52:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 18:52:03,606 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:03,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:52:03,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:52:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 386 states and 469 transitions. [2023-11-21 18:52:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 469 transitions. [2023-11-21 18:52:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 18:52:04,356 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:04,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:04,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 385 states and 468 transitions. [2023-11-21 18:52:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 468 transitions. [2023-11-21 18:52:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-21 18:52:05,889 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:05,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:05,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:05,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 403 states and 487 transitions. [2023-11-21 18:52:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 487 transitions. [2023-11-21 18:52:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 18:52:09,554 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:09,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:52:09,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:52:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 405 states and 489 transitions. [2023-11-21 18:52:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 489 transitions. [2023-11-21 18:52:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-21 18:52:09,699 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:09,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:09,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:09,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 404 states and 488 transitions. [2023-11-21 18:52:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 488 transitions. [2023-11-21 18:52:12,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-21 18:52:12,544 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:12,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:52:12,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:52:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 405 states and 490 transitions. [2023-11-21 18:52:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 490 transitions. [2023-11-21 18:52:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-21 18:52:13,351 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:13,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:13,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:52:13,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 404 states and 489 transitions. [2023-11-21 18:52:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 489 transitions. [2023-11-21 18:52:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-21 18:52:13,472 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:13,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:52:13,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:52:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 406 states and 492 transitions. [2023-11-21 18:52:14,450 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 492 transitions. [2023-11-21 18:52:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 18:52:14,451 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:14,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:14,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:14,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 405 states and 491 transitions. [2023-11-21 18:52:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 491 transitions. [2023-11-21 18:52:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-21 18:52:16,185 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:16,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:52:16,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:52:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 414 states and 501 transitions. [2023-11-21 18:52:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 501 transitions. [2023-11-21 18:52:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 18:52:18,197 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:18,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:18,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:52:18,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 18:52:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:52:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 436 states and 524 transitions. [2023-11-21 18:52:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 524 transitions. [2023-11-21 18:52:25,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 18:52:25,370 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:52:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:52:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:52:25,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:52:25,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:52:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.