./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ --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 d6c389695f28ab23288d12eab23e55426fe9ec0f0b8fe9723cca18e00c3db8b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:37:48,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:37:48,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:37:48,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:37:48,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:37:48,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:37:48,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:37:48,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:37:48,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:37:48,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:37:48,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:37:48,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:37:48,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:37:48,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:37:48,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:37:48,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:37:48,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:37:48,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:37:48,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:37:48,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:37:48,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:37:48,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:37:48,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:37:48,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:37:48,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:37:48,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:37:48,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:37:48,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:37:48,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:37:48,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:37:48,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:37:48,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:37:48,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:37:48,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:37:48,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:37:48,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:37:48,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:37:48,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:37:48,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:37:48,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:37:48,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:37:48,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 01:37:48,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:37:48,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:37:48,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:37:48,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:37:48,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:37:48,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:37:48,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:37:48,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:37:48,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:37:48,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:37:48,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:37:48,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:37:48,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:37:48,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:37:48,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:37:48,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:37:48,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:37:48,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:37:48,511 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:37:48,511 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:37:48,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:37:48,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:37:48,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:37:48,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:37:48,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:37:48,512 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:37:48,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:37:48,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:37:48,513 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_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c389695f28ab23288d12eab23e55426fe9ec0f0b8fe9723cca18e00c3db8b7 [2021-11-23 01:37:48,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:37:48,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:37:48,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:37:48,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:37:48,877 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:37:48,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-11-23 01:37:48,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/data/529421241/111e9374c3d948b7866233220c3407a0/FLAGaa8934dd1 [2021-11-23 01:37:49,479 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:37:49,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-11-23 01:37:49,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/data/529421241/111e9374c3d948b7866233220c3407a0/FLAGaa8934dd1 [2021-11-23 01:37:49,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/data/529421241/111e9374c3d948b7866233220c3407a0 [2021-11-23 01:37:49,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:37:49,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:37:49,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:37:49,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:37:49,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:37:49,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:49" (1/1) ... [2021-11-23 01:37:49,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695b6f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:49, skipping insertion in model container [2021-11-23 01:37:49,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:49" (1/1) ... [2021-11-23 01:37:49,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:37:49,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:37:50,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-11-23 01:37:50,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:37:50,094 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:37:50,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-11-23 01:37:50,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:37:50,141 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:37:50,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50 WrapperNode [2021-11-23 01:37:50,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:37:50,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:37:50,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:37:50,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:37:50,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,180 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-11-23 01:37:50,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:37:50,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:37:50,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:37:50,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:37:50,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:37:50,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:37:50,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:37:50,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:37:50,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:37:50,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:37:50,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:37:50,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:37:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:37:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:37:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:37:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:37:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 01:37:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 01:37:50,386 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:37:50,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:37:50,566 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:37:50,583 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:37:50,587 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:37:50,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:50 BoogieIcfgContainer [2021-11-23 01:37:50,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:37:50,591 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:37:50,591 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:37:50,602 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:37:50,602 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:50" (1/1) ... [2021-11-23 01:37:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:37:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 18 states and 26 transitions. [2021-11-23 01:37:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2021-11-23 01:37:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 01:37:50,707 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:50,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 24 transitions. [2021-11-23 01:37:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-11-23 01:37:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:37:50,892 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:50,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2021-11-23 01:37:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2021-11-23 01:37:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:37:51,048 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:51,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 25 states and 40 transitions. [2021-11-23 01:37:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 40 transitions. [2021-11-23 01:37:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:37:51,442 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:51,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:51,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:37:51,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 29 states and 49 transitions. [2021-11-23 01:37:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2021-11-23 01:37:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 01:37:52,226 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:52,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:52,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:37:52,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 01:37:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 31 states and 54 transitions. [2021-11-23 01:37:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2021-11-23 01:37:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 01:37:52,508 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:52,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:52,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:52,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:37:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 33 states and 58 transitions. [2021-11-23 01:37:53,110 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2021-11-23 01:37:53,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 01:37:53,112 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:53,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:53,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 01:37:53,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 01:37:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 43 states and 90 transitions. [2021-11-23 01:37:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 90 transitions. [2021-11-23 01:37:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 01:37:54,459 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:54,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:54,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:54,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 01:37:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 47 states and 100 transitions. [2021-11-23 01:37:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 100 transitions. [2021-11-23 01:37:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 01:37:55,448 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:55,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:55,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:55,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 01:37:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 49 states and 101 transitions. [2021-11-23 01:37:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 101 transitions. [2021-11-23 01:37:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 01:37:55,950 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:55,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:55,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:55,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-23 01:37:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 51 states and 108 transitions. [2021-11-23 01:37:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 108 transitions. [2021-11-23 01:37:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 01:37:56,553 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:56,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:56,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 01:37:56,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 01:37:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 53 states and 117 transitions. [2021-11-23 01:37:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 117 transitions. [2021-11-23 01:37:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 01:37:57,630 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:57,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:57,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 01:37:57,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 01:37:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 52 states and 112 transitions. [2021-11-23 01:37:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 112 transitions. [2021-11-23 01:37:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 01:37:58,296 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:58,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:58,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:58,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-23 01:37:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 52 states and 111 transitions. [2021-11-23 01:37:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 111 transitions. [2021-11-23 01:37:59,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 01:37:59,085 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:59,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:59,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:59,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-23 01:37:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 53 states and 119 transitions. [2021-11-23 01:37:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 119 transitions. [2021-11-23 01:37:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 01:37:59,755 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:59,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:59,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:37:59,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:37:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-23 01:38:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:38:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 54 states and 121 transitions. [2021-11-23 01:38:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 121 transitions. [2021-11-23 01:38:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 01:38:00,014 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:38:00,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:00,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 01:38:00,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:38:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 01:38:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:38:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 57 states and 127 transitions. [2021-11-23 01:38:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 127 transitions. [2021-11-23 01:38:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 01:38:00,893 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:38:00,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:00,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:38:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:38:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 01:38:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:38:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 38 states and 63 transitions. [2021-11-23 01:38:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 63 transitions. [2021-11-23 01:38:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 01:38:02,874 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:38:02,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:02,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:38:02,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:38:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 01:38:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:38:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 38 states and 62 transitions. [2021-11-23 01:38:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2021-11-23 01:38:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 01:38:03,134 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:38:03,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:03,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 01:38:03,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:38:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-23 01:38:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:38:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 32 states and 51 transitions. [2021-11-23 01:38:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2021-11-23 01:38:04,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:38:04,047 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 20 iterations. [2021-11-23 01:38:04,055 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-23 01:38:04,462 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 01:38:04,466 INFO L560 CodeCheckObserver]: Invariant with dag size 28 [2021-11-23 01:38:04,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:38:04 ImpRootNode [2021-11-23 01:38:04,477 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:38:04,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:38:04,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:38:04,479 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:38:04,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:50" (3/4) ... [2021-11-23 01:38:04,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:38:04,489 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 01:38:04,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 01:38:04,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 01:38:04,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 01:38:04,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:38:04,534 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:38:04,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:38:04,535 INFO L158 Benchmark]: Toolchain (without parser) took 14696.20ms. Allocated memory was 90.2MB in the beginning and 176.2MB in the end (delta: 86.0MB). Free memory was 57.2MB in the beginning and 97.2MB in the end (delta: -40.0MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-11-23 01:38:04,536 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 63.5MB in the beginning and 63.4MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:38:04,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.56ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 97.6MB in the end (delta: -40.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:38:04,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.70ms. Allocated memory is still 121.6MB. Free memory was 97.6MB in the beginning and 96.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:38:04,538 INFO L158 Benchmark]: Boogie Preprocessor took 32.86ms. Allocated memory is still 121.6MB. Free memory was 96.3MB in the beginning and 95.6MB in the end (delta: 721.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:38:04,538 INFO L158 Benchmark]: RCFGBuilder took 371.80ms. Allocated memory is still 121.6MB. Free memory was 95.6MB in the beginning and 85.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:38:04,539 INFO L158 Benchmark]: CodeCheck took 13886.65ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 85.2MB in the beginning and 100.2MB in the end (delta: -15.1MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2021-11-23 01:38:04,540 INFO L158 Benchmark]: Witness Printer took 56.19ms. Allocated memory is still 176.2MB. Free memory was 100.2MB in the beginning and 97.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:38:04,543 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.4s, OverallIterations: 20, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1152 SdHoareTripleChecker+Valid, 10.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 819 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 206 mSDsCounter, 2197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5790 IncrementalHoareTripleChecker+Invalid, 7987 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2197 mSolverCounterUnsat, 613 mSDtfsCounter, 5790 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5158 GetRequests, 4820 SyntacticMatches, 128 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20859 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 505 ConstructedInterpolants, 0 QuantifiedInterpolants, 1831 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1578 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 677/755 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((s == 2 + 2 * a && a == 1) || (9 == s && 2 == a)) || (!(5 == t && 2 == a) && 1 < counter)) || (!(3 == t && a == 1) && counter <= 1) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 63.5MB in the beginning and 63.4MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.56ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 97.6MB in the end (delta: -40.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.70ms. Allocated memory is still 121.6MB. Free memory was 97.6MB in the beginning and 96.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.86ms. Allocated memory is still 121.6MB. Free memory was 96.3MB in the beginning and 95.6MB in the end (delta: 721.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.80ms. Allocated memory is still 121.6MB. Free memory was 95.6MB in the beginning and 85.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 13886.65ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 85.2MB in the beginning and 100.2MB in the end (delta: -15.1MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * Witness Printer took 56.19ms. Allocated memory is still 176.2MB. Free memory was 100.2MB in the beginning and 97.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 01:38:04,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a11245-04b9-4324-b280-c4a6558ec426/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE