./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5083763cd1026dac92f37bc5a05779baf01a71b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-02 02:44:43,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-02 02:44:43,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-02 02:44:43,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-02 02:44:43,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-02 02:44:43,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-02 02:44:43,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-02 02:44:43,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-02 02:44:43,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-02 02:44:43,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-02 02:44:43,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-02 02:44:43,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-02 02:44:43,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-02 02:44:43,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-02 02:44:43,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-02 02:44:43,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-02 02:44:43,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-02 02:44:43,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-02 02:44:43,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-02 02:44:43,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-02 02:44:43,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-02 02:44:43,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-02 02:44:43,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-02 02:44:43,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-02 02:44:43,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-02 02:44:43,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-02 02:44:43,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-02 02:44:43,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-02 02:44:43,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-02 02:44:43,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-02 02:44:43,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-02 02:44:43,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-02 02:44:43,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-02 02:44:43,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-02 02:44:43,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-02 02:44:43,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-02 02:44:43,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-02 02:44:43,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-02 02:44:43,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-02 02:44:43,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-02 02:44:43,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-02 02:44:43,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-02 02:44:43,577 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-02 02:44:43,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-02 02:44:43,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-02 02:44:43,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-02 02:44:43,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-02 02:44:43,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-02 02:44:43,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-02 02:44:43,579 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-02 02:44:43,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-02 02:44:43,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-02 02:44:43,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-02 02:44:43,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-02 02:44:43,580 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-02 02:44:43,580 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-02 02:44:43,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-02 02:44:43,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-02 02:44:43,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-02 02:44:43,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-02 02:44:43,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-02 02:44:43,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-02 02:44:43,581 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-02 02:44:43,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-02 02:44:43,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-02 02:44:43,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_66bfe97b-9290-45fd-912e-cb9470cc4729/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(__VERIFIER_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 -> e5083763cd1026dac92f37bc5a05779baf01a71b [2019-12-02 02:44:43,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-02 02:44:43,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-02 02:44:43,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-02 02:44:43,692 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-02 02:44:43,692 INFO L275 PluginConnector]: CDTParser initialized [2019-12-02 02:44:43,693 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-queue-2.i [2019-12-02 02:44:43,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/data/38475d792/1ad8f87fae4d444d82435a057310b38e/FLAG2436d08df [2019-12-02 02:44:44,189 INFO L306 CDTParser]: Found 1 translation units. [2019-12-02 02:44:44,190 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/sv-benchmarks/c/forester-heap/sll-queue-2.i [2019-12-02 02:44:44,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/data/38475d792/1ad8f87fae4d444d82435a057310b38e/FLAG2436d08df [2019-12-02 02:44:44,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/data/38475d792/1ad8f87fae4d444d82435a057310b38e [2019-12-02 02:44:44,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-02 02:44:44,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-02 02:44:44,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-02 02:44:44,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-02 02:44:44,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-02 02:44:44,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53457aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44, skipping insertion in model container [2019-12-02 02:44:44,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-02 02:44:44,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-02 02:44:44,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-02 02:44:44,461 INFO L203 MainTranslator]: Completed pre-run [2019-12-02 02:44:44,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-02 02:44:44,521 INFO L208 MainTranslator]: Completed translation [2019-12-02 02:44:44,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44 WrapperNode [2019-12-02 02:44:44,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-02 02:44:44,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-02 02:44:44,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-02 02:44:44,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-02 02:44:44,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-02 02:44:44,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-02 02:44:44,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-02 02:44:44,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-02 02:44:44,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-02 02:44:44,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-02 02:44:44,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-02 02:44:44,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-02 02:44:44,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/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 [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-02 02:44:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-02 02:44:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-02 02:44:44,972 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-02 02:44:44,972 INFO L287 CfgBuilder]: Removed 35 assume(true) statements. [2019-12-02 02:44:44,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:44:44 BoogieIcfgContainer [2019-12-02 02:44:44,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-02 02:44:44,973 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-02 02:44:44,973 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-02 02:44:44,980 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-02 02:44:44,980 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:44:44" (1/1) ... [2019-12-02 02:44:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-02 02:44:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 76 states and 125 transitions. [2019-12-02 02:44:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 125 transitions. [2019-12-02 02:44:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-02 02:44:45,014 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 76 states and 120 transitions. [2019-12-02 02:44:45,111 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 120 transitions. [2019-12-02 02:44:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-02 02:44:45,112 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 79 states and 122 transitions. [2019-12-02 02:44:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 122 transitions. [2019-12-02 02:44:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-02 02:44:45,186 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 80 states and 123 transitions. [2019-12-02 02:44:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions. [2019-12-02 02:44:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-02 02:44:45,212 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 82 states and 124 transitions. [2019-12-02 02:44:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 124 transitions. [2019-12-02 02:44:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-02 02:44:45,305 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 87 states and 129 transitions. [2019-12-02 02:44:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2019-12-02 02:44:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-02 02:44:45,405 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 88 states and 127 transitions. [2019-12-02 02:44:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2019-12-02 02:44:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-02 02:44:45,430 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 89 states and 125 transitions. [2019-12-02 02:44:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2019-12-02 02:44:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-02 02:44:45,450 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 80 states and 115 transitions. [2019-12-02 02:44:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2019-12-02 02:44:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-02 02:44:45,679 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 78 states and 113 transitions. [2019-12-02 02:44:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2019-12-02 02:44:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-02 02:44:45,743 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 83 states and 116 transitions. [2019-12-02 02:44:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 116 transitions. [2019-12-02 02:44:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-02 02:44:45,811 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 92 states and 127 transitions. [2019-12-02 02:44:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 127 transitions. [2019-12-02 02:44:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-02 02:44:46,229 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 107 states and 145 transitions. [2019-12-02 02:44:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 145 transitions. [2019-12-02 02:44:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-02 02:44:47,047 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 112 states and 152 transitions. [2019-12-02 02:44:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 152 transitions. [2019-12-02 02:44:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-02 02:44:47,504 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-02 02:44:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 122 states and 170 transitions. [2019-12-02 02:44:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2019-12-02 02:44:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-02 02:44:48,323 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-02 02:44:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 124 states and 173 transitions. [2019-12-02 02:44:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 173 transitions. [2019-12-02 02:44:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-02 02:44:48,443 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 130 states and 182 transitions. [2019-12-02 02:44:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 182 transitions. [2019-12-02 02:44:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-02 02:44:49,136 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-02 02:44:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 133 states and 187 transitions. [2019-12-02 02:44:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 187 transitions. [2019-12-02 02:44:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-02 02:44:49,273 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 153 states and 218 transitions. [2019-12-02 02:44:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 218 transitions. [2019-12-02 02:44:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-02 02:44:51,541 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 162 states and 225 transitions. [2019-12-02 02:44:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 225 transitions. [2019-12-02 02:44:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-02 02:44:52,335 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:44:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:44:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 182 states and 257 transitions. [2019-12-02 02:44:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 257 transitions. [2019-12-02 02:44:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-02 02:44:57,493 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:44:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:44:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 202 states and 286 transitions. [2019-12-02 02:45:02,990 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 286 transitions. [2019-12-02 02:45:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-02 02:45:02,991 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 211 states and 298 transitions. [2019-12-02 02:45:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 298 transitions. [2019-12-02 02:45:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-02 02:45:03,990 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-02 02:45:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 218 states and 309 transitions. [2019-12-02 02:45:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 309 transitions. [2019-12-02 02:45:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-02 02:45:06,528 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 230 states and 327 transitions. [2019-12-02 02:45:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 327 transitions. [2019-12-02 02:45:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-02 02:45:08,348 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:10,890 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-12-02 02:45:11,556 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-12-02 02:45:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 249 states and 362 transitions. [2019-12-02 02:45:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 362 transitions. [2019-12-02 02:45:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-02 02:45:19,316 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 258 states and 374 transitions. [2019-12-02 02:45:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 374 transitions. [2019-12-02 02:45:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-02 02:45:20,472 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 282 states and 412 transitions. [2019-12-02 02:45:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 412 transitions. [2019-12-02 02:45:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-02 02:45:26,961 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 305 states and 454 transitions. [2019-12-02 02:45:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 454 transitions. [2019-12-02 02:45:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-02 02:45:37,670 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 250 states and 357 transitions. [2019-12-02 02:45:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 357 transitions. [2019-12-02 02:45:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-02 02:45:44,540 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:45:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:45:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 271 states and 389 transitions. [2019-12-02 02:45:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 389 transitions. [2019-12-02 02:45:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-02 02:45:58,792 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:45:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:45:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-02 02:46:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:46:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 273 states and 393 transitions. [2019-12-02 02:46:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 393 transitions. [2019-12-02 02:46:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-02 02:46:02,553 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:46:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 02:46:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 02:46:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 02:46:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 279 states and 404 transitions. [2019-12-02 02:46:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 404 transitions. [2019-12-02 02:46:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-02 02:46:08,214 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 02:46:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 02:46:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 02:46:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 02:46:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 02:46:08,850 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 33 iterations. [2019-12-02 02:46:08,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 02:46:08 ImpRootNode [2019-12-02 02:46:08,887 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-02 02:46:08,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-02 02:46:08,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-02 02:46:08,888 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-02 02:46:08,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:44:44" (3/4) ... [2019-12-02 02:46:08,890 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-02 02:46:08,948 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_66bfe97b-9290-45fd-912e-cb9470cc4729/bin/ukojak/witness.graphml [2019-12-02 02:46:08,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-02 02:46:08,949 INFO L168 Benchmark]: Toolchain (without parser) took 84741.05 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 275.8 MB). Free memory was 940.8 MB in the beginning and 1.2 GB in the end (delta: -241.3 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2019-12-02 02:46:08,950 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-02 02:46:08,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-02 02:46:08,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-02 02:46:08,951 INFO L168 Benchmark]: Boogie Preprocessor took 24.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-02 02:46:08,951 INFO L168 Benchmark]: RCFGBuilder took 394.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 11.5 GB. [2019-12-02 02:46:08,951 INFO L168 Benchmark]: CodeCheck took 83913.72 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 158.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -139.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-12-02 02:46:08,952 INFO L168 Benchmark]: Witness Printer took 60.80 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-12-02 02:46:08,954 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 76 locations, 14 error locations. Result: UNSAFE, OverallTime: 83.8s, OverallIterations: 33, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: -655673128 SDtfs, -991982224 SDslu, -875001144 SDs, 0 SdLazy, 1040431030 SolverSat, -1228687878 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6245 GetRequests, 5423 SyntacticMatches, 210 SemanticMatches, 612 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227716 ImplicationChecksByTransitivity, 79.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 737 NumberOfCodeBlocks, 737 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 665 ConstructedInterpolants, 0 QuantifiedInterpolants, 350862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 10 PerfectInterpolantSequences, 38/319 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: 1035]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] head->data = 0 [L988] SLL* item = head; [L989] int status = 0; [L991] COND TRUE __VERIFIER_nondet_int() [L993] item->next = malloc(sizeof(SLL)) [L994] EXPR item->next [L994] item = item->next [L995] item->next = ((void*)0) [L997] COND TRUE !status [L999] item->data = 1 [L1000] status = 1 [L1013] COND FALSE !(!(head != ((void*)0))) [L1014] COND FALSE !(!(item != ((void*)0))) [L991] COND TRUE __VERIFIER_nondet_int() [L993] item->next = malloc(sizeof(SLL)) [L994] EXPR item->next [L994] item = item->next [L995] item->next = ((void*)0) [L997] COND FALSE !(!status) [L1002] COND TRUE status == 1 [L1004] item->data = 2 [L1005] status = 2 [L1013] COND FALSE !(!(head != ((void*)0))) [L1014] COND FALSE !(!(item != ((void*)0))) [L991] COND TRUE __VERIFIER_nondet_int() [L993] item->next = malloc(sizeof(SLL)) [L994] EXPR item->next [L994] item = item->next [L995] item->next = ((void*)0) [L997] COND FALSE !(!status) [L1002] COND FALSE !(status == 1) [L1007] COND TRUE status >= 2 [L1009] item->data = 3 [L1010] status = 3 [L1013] COND FALSE !(!(head != ((void*)0))) [L1014] COND FALSE !(!(item != ((void*)0))) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1017] COND FALSE !(!(head != ((void*)0))) [L1018] COND FALSE !(status == 1) [L1023] COND FALSE !(status == 2) [L1029] COND TRUE status == 3 [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] EXPR head->next [L1032] COND FALSE !(!(head->next != ((void*)0))) [L1033] EXPR head->next [L1033] EXPR head->next->next [L1033] COND FALSE !(!(head->next->next != ((void*)0))) [L1034] EXPR head->next [L1034] EXPR head->next->next [L1034] EXPR head->next->next->next [L1034] COND FALSE !(!(head->next->next->next != ((void*)0))) [L1035] EXPR head->next [L1035] EXPR head->next->next [L1035] EXPR head->next->next->next [L1035] EXPR head->next->next->next->data [L1035] COND TRUE !(head->next->next->next->data != 3) [L1035] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 394.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 11.5 GB. * CodeCheck took 83913.72 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 158.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -139.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * Witness Printer took 60.80 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...