./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d887be7dd2c3278ee87053cbed7506ff3c2170c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 17:49:04,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:49:04,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:49:04,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:49:04,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:49:04,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:49:04,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:49:04,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:49:04,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:49:04,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:49:04,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:49:04,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:49:04,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:49:04,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:49:04,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:49:04,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:49:04,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:49:04,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:49:04,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:49:04,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:49:04,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:49:04,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:49:04,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:49:04,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:49:04,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:49:04,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:49:04,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:49:04,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:49:04,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:49:04,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:49:04,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:49:04,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:49:04,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:49:04,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:49:04,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:49:04,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:49:04,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:49:04,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:49:04,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:49:04,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:49:04,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:49:04,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:49:04,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:49:04,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:49:04,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:49:04,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:49:04,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:49:04,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:49:04,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:49:04,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:49:04,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:49:04,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:49:04,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:49:04,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:49:04,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:49:04,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:49:04,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:49:04,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:49:04,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:49:04,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:49:04,389 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:49:04,389 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:49:04,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:49:04,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:49:04,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:49:04,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:49:04,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:49:04,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:49:04,391 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:49:04,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:49:04,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:49:04,391 INFO L138 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-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d887be7dd2c3278ee87053cbed7506ff3c2170c [2020-12-01 17:49:04,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:49:04,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:49:04,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:49:04,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:49:04,760 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:49:04,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2020-12-01 17:49:04,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/data/750466fd3/1f84995fd9de48ebb6525ec04b106e87/FLAG29a46dc31 [2020-12-01 17:49:05,256 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:49:05,257 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2020-12-01 17:49:05,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/data/750466fd3/1f84995fd9de48ebb6525ec04b106e87/FLAG29a46dc31 [2020-12-01 17:49:05,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/data/750466fd3/1f84995fd9de48ebb6525ec04b106e87 [2020-12-01 17:49:05,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:49:05,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:49:05,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:49:05,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:49:05,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:49:05,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8d2a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05, skipping insertion in model container [2020-12-01 17:49:05,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:49:05,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:49:05,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:49:05,886 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:49:05,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:49:05,919 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:49:05,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05 WrapperNode [2020-12-01 17:49:05,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:49:05,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:49:05,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:49:05,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:49:05,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:49:05,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:49:05,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:49:05,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:49:05,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... [2020-12-01 17:49:05,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:49:05,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:49:05,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:49:05,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:49:05,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:49:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:49:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:49:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:49:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:49:06,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:49:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-12-01 17:49:06,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-12-01 17:49:06,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:49:06,644 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 17:49:06,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:49:06 BoogieIcfgContainer [2020-12-01 17:49:06,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:49:06,649 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:49:06,650 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:49:06,660 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:49:06,661 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:49:06" (1/1) ... [2020-12-01 17:49:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:49:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2020-12-01 17:49:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2020-12-01 17:49:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:49:06,724 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 22 states and 31 transitions. [2020-12-01 17:49:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-12-01 17:49:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:49:06,894 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 27 states and 45 transitions. [2020-12-01 17:49:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2020-12-01 17:49:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:49:07,140 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 29 states and 48 transitions. [2020-12-01 17:49:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 48 transitions. [2020-12-01 17:49:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 17:49:07,384 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 33 states and 57 transitions. [2020-12-01 17:49:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 57 transitions. [2020-12-01 17:49:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:49:07,902 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:07,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 17:49:07,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:49:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 17:49:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 38 states and 68 transitions. [2020-12-01 17:49:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 68 transitions. [2020-12-01 17:49:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:49:09,285 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:09,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 17:49:09,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:49:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:49:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 48 states and 108 transitions. [2020-12-01 17:49:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 108 transitions. [2020-12-01 17:49:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:49:10,972 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:11,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-01 17:49:11,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:49:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:49:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 54 states and 125 transitions. [2020-12-01 17:49:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 125 transitions. [2020-12-01 17:49:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:49:12,458 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:12,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 17:49:12,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:49:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 17:49:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 56 states and 126 transitions. [2020-12-01 17:49:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 126 transitions. [2020-12-01 17:49:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 17:49:13,159 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:13,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 17:49:13,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:49:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 17:49:41,143 WARN L197 SmtUtils]: Spent 10.04 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-01 17:50:02,351 WARN L197 SmtUtils]: Spent 20.11 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-01 17:50:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:50:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 61 states and 141 transitions. [2020-12-01 17:50:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 141 transitions. [2020-12-01 17:50:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 17:50:10,665 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:50:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:50:10,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 17:50:10,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:50:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-01 17:50:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:50:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 63 states and 143 transitions. [2020-12-01 17:50:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 143 transitions. [2020-12-01 17:50:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 17:50:11,502 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:50:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:50:11,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 17:50:11,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:50:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 17:51:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:51:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 69 states and 165 transitions. [2020-12-01 17:51:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 165 transitions. [2020-12-01 17:51:05,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 17:51:05,643 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:51:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:51:05,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 17:51:05,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:51:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 17:51:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:51:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 71 states and 167 transitions. [2020-12-01 17:51:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 167 transitions. [2020-12-01 17:51:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:51:07,448 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:51:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:51:07,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-01 17:51:07,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:51:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 17:51:28,741 WARN L197 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2020-12-01 17:51:41,725 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-01 17:52:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:52:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 77 states and 192 transitions. [2020-12-01 17:52:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 192 transitions. [2020-12-01 17:52:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 17:52:45,593 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:52:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:52:45,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 17:52:45,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:52:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-01 17:53:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:53:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 90 states and 261 transitions. [2020-12-01 17:53:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 261 transitions. [2020-12-01 17:53:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 17:53:51,605 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:53:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:53:51,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 17:53:51,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:53:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 17:54:13,391 WARN L197 SmtUtils]: Spent 10.12 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-01 17:54:26,071 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-01 17:54:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:54:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 95 states and 272 transitions. [2020-12-01 17:54:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 272 transitions. [2020-12-01 17:54:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-01 17:54:48,866 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:54:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:54:48,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 17:54:48,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:54:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-01 17:55:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:55:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 102 states and 300 transitions. [2020-12-01 17:55:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 300 transitions. [2020-12-01 17:55:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-01 17:55:13,944 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:55:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:55:13,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 17:55:13,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:55:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-01 17:55:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:55:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 107 states and 304 transitions. [2020-12-01 17:55:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 304 transitions. [2020-12-01 17:55:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-01 17:55:34,882 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:55:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:55:34,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-01 17:55:34,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:55:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-01 17:55:39,822 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-01 17:55:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:55:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 75 states and 188 transitions. [2020-12-01 17:55:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 188 transitions. [2020-12-01 17:55:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:55:54,411 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:55:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:55:54,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-01 17:55:54,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:55:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-01 17:56:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:56:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 75 states and 187 transitions. [2020-12-01 17:56:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 187 transitions. [2020-12-01 17:56:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:56:11,776 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:56:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:56:11,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 17:56:11,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 17:56:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-01 17:56:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:56:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 45 states and 81 transitions. [2020-12-01 17:56:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 81 transitions. [2020-12-01 17:56:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-01 17:56:27,764 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:56:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:56:27,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:56:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:56:27,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:56:28,577 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2020-12-01 17:56:28,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:56:28 ImpRootNode [2020-12-01 17:56:28,671 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:56:28,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:56:28,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:56:28,672 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:56:28,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:49:06" (3/4) ... [2020-12-01 17:56:28,675 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:56:28,780 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c3c475b-f247-4f3e-a56a-68e2721a99fd/bin/ukojak/witness.graphml [2020-12-01 17:56:28,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:56:28,782 INFO L168 Benchmark]: Toolchain (without parser) took 443128.75 ms. Allocated memory was 113.2 MB in the beginning and 207.6 MB in the end (delta: 94.4 MB). Free memory was 86.8 MB in the beginning and 131.4 MB in the end (delta: -44.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,782 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:56:28,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.53 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 86.5 MB in the beginning and 117.6 MB in the end (delta: -31.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.50 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 116.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,784 INFO L168 Benchmark]: Boogie Preprocessor took 22.02 ms. Allocated memory is still 142.6 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,785 INFO L168 Benchmark]: RCFGBuilder took 669.81 ms. Allocated memory is still 142.6 MB. Free memory was 114.9 MB in the beginning and 95.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,785 INFO L168 Benchmark]: CodeCheck took 442021.49 ms. Allocated memory was 142.6 MB in the beginning and 207.6 MB in the end (delta: 65.0 MB). Free memory was 95.0 MB in the beginning and 134.5 MB in the end (delta: -39.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,786 INFO L168 Benchmark]: Witness Printer took 109.18 ms. Allocated memory is still 207.6 MB. Free memory was 134.5 MB in the beginning and 131.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:56:28,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 441.8s, OverallIterations: 21, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18714240 SDtfs, 2591016 SDslu, 4950616 SDs, 0 SdLazy, 21816388 SolverSat, 7288688 SolverUnsat, 1280 SolverUnknown, 0 SolverNotchecked, 279.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6641 GetRequests, 6158 SyntacticMatches, 144 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55693 ImplicationChecksByTransitivity, 401.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 20.9s InterpolantComputationTime, 636 NumberOfCodeBlocks, 636 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 568 ConstructedInterpolants, 0 QuantifiedInterpolants, 73906 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1821 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 760/791 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<2 [L36] CALL __VERIFIER_assert(q == 0) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L36] RET __VERIFIER_assert(q == 0) VAL [counter=1] [L37] CALL __VERIFIER_assert(r == A) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L37] RET __VERIFIER_assert(r == A) VAL [counter=1] [L38] CALL __VERIFIER_assert(d == B * p) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] RET __VERIFIER_assert(d == B * p) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<2 [L36] CALL __VERIFIER_assert(q == 0) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L36] RET __VERIFIER_assert(q == 0) VAL [counter=2] [L37] CALL __VERIFIER_assert(r == A) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L37] RET __VERIFIER_assert(r == A) VAL [counter=2] [L38] CALL __VERIFIER_assert(d == B * p) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] RET __VERIFIER_assert(d == B * p) VAL [counter=2] [L39] COND TRUE !(r >= d) VAL [counter=2] [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<2) [L59] CALL __VERIFIER_assert(A == d*q + r) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L59] RET __VERIFIER_assert(A == d*q + r) VAL [counter=3] [L60] CALL __VERIFIER_assert(B == d) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard-u.c", 8, "reach_error") VAL [counter=3] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.53 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 86.5 MB in the beginning and 117.6 MB in the end (delta: -31.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.50 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 116.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.02 ms. Allocated memory is still 142.6 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 669.81 ms. Allocated memory is still 142.6 MB. Free memory was 114.9 MB in the beginning and 95.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 442021.49 ms. Allocated memory was 142.6 MB in the beginning and 207.6 MB in the end (delta: 65.0 MB). Free memory was 95.0 MB in the beginning and 134.5 MB in the end (delta: -39.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 109.18 ms. Allocated memory is still 207.6 MB. Free memory was 134.5 MB in the beginning and 131.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forcibly destroying the process Received shutdown request...