./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.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_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/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_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/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_3ed43208-217a-4c9d-a63d-23a18e47556c/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 5cb4924cbdb465eb5009b33592f9047ad895ad10dbe627600c12529f62c9845d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 00:54:25,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:54:25,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:54:25,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:54:25,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:54:25,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:54:25,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:54:25,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:54:25,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:54:25,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:54:25,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:54:25,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:54:25,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:54:25,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:54:25,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:54:25,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:54:25,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:54:25,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:54:25,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:54:25,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:54:25,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:54:25,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:54:25,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:54:25,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:54:25,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:54:25,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:54:25,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:54:25,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:54:25,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:54:25,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:54:25,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:54:25,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:54:25,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:54:25,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:54:25,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:54:25,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:54:25,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:54:25,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:54:25,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:54:25,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:54:25,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:54:25,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 00:54:25,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:54:25,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:54:25,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 00:54:25,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 00:54:25,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:54:25,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:54:25,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:54:25,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 00:54:25,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:54:25,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 00:54:25,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:54:25,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:54:25,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:54:25,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:54:25,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 00:54:25,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:54:25,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:54:25,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:54:25,299 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 00:54:25,299 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 00:54:25,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:54:25,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:54:25,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:54:25,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:54:25,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:54:25,300 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 00:54:25,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:54:25,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:54:25,301 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_3ed43208-217a-4c9d-a63d-23a18e47556c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cb4924cbdb465eb5009b33592f9047ad895ad10dbe627600c12529f62c9845d [2021-11-23 00:54:25,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:54:25,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:54:25,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:54:25,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:54:25,687 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:54:25,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c [2021-11-23 00:54:25,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/data/4db7d66ba/e8650095c32041d38e289332891a6492/FLAG65b177746 [2021-11-23 00:54:26,189 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:54:26,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c [2021-11-23 00:54:26,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/data/4db7d66ba/e8650095c32041d38e289332891a6492/FLAG65b177746 [2021-11-23 00:54:26,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/data/4db7d66ba/e8650095c32041d38e289332891a6492 [2021-11-23 00:54:26,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:54:26,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:54:26,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:54:26,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:54:26,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:54:26,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce35f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26, skipping insertion in model container [2021-11-23 00:54:26,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:54:26,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:54:26,807 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_3ed43208-217a-4c9d-a63d-23a18e47556c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c[520,533] [2021-11-23 00:54:26,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:54:26,831 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:54:26,844 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_3ed43208-217a-4c9d-a63d-23a18e47556c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound50.c[520,533] [2021-11-23 00:54:26,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:54:26,864 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:54:26,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26 WrapperNode [2021-11-23 00:54:26,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:54:26,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:54:26,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:54:26,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:54:26,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,900 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2021-11-23 00:54:26,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:54:26,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:54:26,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:54:26,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:54:26,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:54:26,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:54:26,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:54:26,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:54:26,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:26" (1/1) ... [2021-11-23 00:54:26,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:54:26,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 00:54:26,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 00:54:27,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 00:54:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:54:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:54:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:54:27,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:54:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 00:54:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 00:54:27,107 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:54:27,109 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:54:27,236 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:54:27,268 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:54:27,268 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 00:54:27,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:27 BoogieIcfgContainer [2021-11-23 00:54:27,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:54:27,274 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 00:54:27,274 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 00:54:27,288 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 00:54:27,288 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:27" (1/1) ... [2021-11-23 00:54:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2021-11-23 00:54:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2021-11-23 00:54:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 00:54:27,359 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:27,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:27,567 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 00:54:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 33 transitions. [2021-11-23 00:54:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2021-11-23 00:54:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 00:54:27,710 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:27,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:27,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 00:54:27,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:28,018 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 00:54:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 24 states and 40 transitions. [2021-11-23 00:54:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 40 transitions. [2021-11-23 00:54:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 00:54:28,204 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:28,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:28,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 00:54:28,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:28,397 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 00:54:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 26 states and 45 transitions. [2021-11-23 00:54:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 45 transitions. [2021-11-23 00:54:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 00:54:28,530 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:28,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:28,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:28,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:28,743 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 00:54:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 28 states and 47 transitions. [2021-11-23 00:54:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2021-11-23 00:54:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 00:54:29,116 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:29,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:29,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:29,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:29,314 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 00:54:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 31 states and 52 transitions. [2021-11-23 00:54:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 52 transitions. [2021-11-23 00:54:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 00:54:29,538 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:29,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:29,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:29,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:29,682 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 00:54:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 33 states and 55 transitions. [2021-11-23 00:54:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2021-11-23 00:54:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 00:54:29,891 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:29,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:29,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 00:54:29,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 00:54:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 34 states and 57 transitions. [2021-11-23 00:54:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2021-11-23 00:54:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 00:54:30,397 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:30,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:30,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:30,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:30,656 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 00:54:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 34 states and 56 transitions. [2021-11-23 00:54:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2021-11-23 00:54:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 00:54:30,941 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:30,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:30,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:30,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-23 00:54:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 35 states and 60 transitions. [2021-11-23 00:54:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2021-11-23 00:54:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 00:54:31,402 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:31,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:31,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:31,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 00:54:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 36 states and 61 transitions. [2021-11-23 00:54:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 61 transitions. [2021-11-23 00:54:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 00:54:31,646 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:31,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:31,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 00:54:31,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 00:54:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 39 states and 67 transitions. [2021-11-23 00:54:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 67 transitions. [2021-11-23 00:54:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 00:54:32,089 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:32,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:32,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:32,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 00:54:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 39 states and 66 transitions. [2021-11-23 00:54:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 66 transitions. [2021-11-23 00:54:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 00:54:32,243 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:32,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:32,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 00:54:32,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-23 00:54:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 40 states and 68 transitions. [2021-11-23 00:54:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 68 transitions. [2021-11-23 00:54:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 00:54:32,851 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:32,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:32,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 00:54:32,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 00:54:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 41 states and 72 transitions. [2021-11-23 00:54:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 72 transitions. [2021-11-23 00:54:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 00:54:33,438 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:33,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:33,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:33,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 41 proven. 7 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-23 00:54:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 42 states and 73 transitions. [2021-11-23 00:54:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2021-11-23 00:54:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 00:54:33,685 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:33,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:33,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 00:54:33,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-23 00:54:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 45 states and 79 transitions. [2021-11-23 00:54:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 79 transitions. [2021-11-23 00:54:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 00:54:34,295 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:34,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:34,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:34,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-23 00:54:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 45 states and 78 transitions. [2021-11-23 00:54:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2021-11-23 00:54:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 00:54:34,479 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:34,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:34,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 00:54:34,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-23 00:54:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 46 states and 80 transitions. [2021-11-23 00:54:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 80 transitions. [2021-11-23 00:54:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 00:54:35,326 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:35,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:35,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 00:54:35,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-23 00:54:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 47 states and 84 transitions. [2021-11-23 00:54:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 84 transitions. [2021-11-23 00:54:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 00:54:36,015 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:36,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:36,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:36,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-23 00:54:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 48 states and 85 transitions. [2021-11-23 00:54:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 85 transitions. [2021-11-23 00:54:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 00:54:36,318 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:36,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:36,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 00:54:36,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 24 proven. 38 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-23 00:54:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 51 states and 91 transitions. [2021-11-23 00:54:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 91 transitions. [2021-11-23 00:54:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 00:54:37,076 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:37,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:37,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-23 00:54:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 51 states and 90 transitions. [2021-11-23 00:54:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 90 transitions. [2021-11-23 00:54:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 00:54:37,315 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:37,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:37,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 00:54:37,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-11-23 00:54:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 52 states and 92 transitions. [2021-11-23 00:54:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 92 transitions. [2021-11-23 00:54:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 00:54:38,356 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:38,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:38,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 00:54:38,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 28 proven. 46 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-23 00:54:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 53 states and 96 transitions. [2021-11-23 00:54:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2021-11-23 00:54:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 00:54:39,337 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:39,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:39,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:39,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2021-11-23 00:54:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 54 states and 97 transitions. [2021-11-23 00:54:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2021-11-23 00:54:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 00:54:39,678 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:39,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:39,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 00:54:39,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-11-23 00:54:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 57 states and 103 transitions. [2021-11-23 00:54:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 103 transitions. [2021-11-23 00:54:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 00:54:40,530 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:40,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:40,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:40,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2021-11-23 00:54:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 57 states and 102 transitions. [2021-11-23 00:54:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 102 transitions. [2021-11-23 00:54:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 00:54:40,769 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:40,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:40,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 00:54:40,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-11-23 00:54:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 58 states and 104 transitions. [2021-11-23 00:54:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2021-11-23 00:54:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 00:54:41,966 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:41,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:42,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 00:54:42,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 34 proven. 70 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-11-23 00:54:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 59 states and 108 transitions. [2021-11-23 00:54:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 108 transitions. [2021-11-23 00:54:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 00:54:43,054 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:43,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:43,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:43,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 95 proven. 7 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2021-11-23 00:54:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 60 states and 109 transitions. [2021-11-23 00:54:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 109 transitions. [2021-11-23 00:54:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 00:54:43,436 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:43,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:43,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 00:54:43,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 36 proven. 87 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-11-23 00:54:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 63 states and 115 transitions. [2021-11-23 00:54:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 115 transitions. [2021-11-23 00:54:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 00:54:44,274 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:44,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:44,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:44,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 95 proven. 7 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2021-11-23 00:54:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 63 states and 114 transitions. [2021-11-23 00:54:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 114 transitions. [2021-11-23 00:54:44,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 00:54:44,591 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:44,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:44,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-23 00:54:44,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 38 proven. 93 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-11-23 00:54:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 64 states and 116 transitions. [2021-11-23 00:54:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 116 transitions. [2021-11-23 00:54:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 00:54:45,939 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:45,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:45,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 00:54:45,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 40 proven. 99 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-11-23 00:54:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 65 states and 120 transitions. [2021-11-23 00:54:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 120 transitions. [2021-11-23 00:54:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 00:54:47,030 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:47,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:47,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:47,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-11-23 00:54:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 66 states and 121 transitions. [2021-11-23 00:54:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2021-11-23 00:54:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 00:54:47,391 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:47,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 00:54:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 42 proven. 119 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2021-11-23 00:54:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 69 states and 127 transitions. [2021-11-23 00:54:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 127 transitions. [2021-11-23 00:54:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 00:54:48,480 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:48,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:48,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:48,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 112 proven. 7 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2021-11-23 00:54:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 69 states and 126 transitions. [2021-11-23 00:54:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 126 transitions. [2021-11-23 00:54:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-23 00:54:48,781 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:48,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:48,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-23 00:54:48,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 44 proven. 126 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-11-23 00:54:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 70 states and 128 transitions. [2021-11-23 00:54:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2021-11-23 00:54:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 00:54:50,246 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:50,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:50,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 00:54:50,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 46 proven. 133 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-11-23 00:54:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 71 states and 132 transitions. [2021-11-23 00:54:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 132 transitions. [2021-11-23 00:54:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 00:54:51,660 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:51,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:51,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:51,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 131 proven. 7 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2021-11-23 00:54:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 72 states and 133 transitions. [2021-11-23 00:54:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 133 transitions. [2021-11-23 00:54:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-23 00:54:52,168 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:52,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:52,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 00:54:52,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 169 proven. 35 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-11-23 00:54:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 56 states and 89 transitions. [2021-11-23 00:54:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 89 transitions. [2021-11-23 00:54:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 00:54:57,277 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:54:57,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:57,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:54:57,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2021-11-23 00:54:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:54:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 50 states and 82 transitions. [2021-11-23 00:54:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 82 transitions. [2021-11-23 00:54:58,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 00:54:58,278 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 43 iterations. [2021-11-23 00:54:58,288 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-23 00:54:59,220 INFO L560 CodeCheckObserver]: Invariant with dag size 66 [2021-11-23 00:54:59,232 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 00:54:59,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 12:54:59 ImpRootNode [2021-11-23 00:54:59,233 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 00:54:59,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 00:54:59,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 00:54:59,234 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 00:54:59,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:27" (3/4) ... [2021-11-23 00:54:59,238 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 00:54:59,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 00:54:59,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-23 00:54:59,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 00:54:59,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 00:54:59,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 00:54:59,302 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 00:54:59,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 00:54:59,303 INFO L158 Benchmark]: Toolchain (without parser) took 32715.32ms. Allocated memory was 90.2MB in the beginning and 272.6MB in the end (delta: 182.5MB). Free memory was 51.2MB in the beginning and 179.2MB in the end (delta: -128.0MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,304 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:54:59,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.77ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 51.0MB in the beginning and 103.5MB in the end (delta: -52.5MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.31ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 101.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,306 INFO L158 Benchmark]: Boogie Preprocessor took 21.43ms. Allocated memory is still 130.0MB. Free memory was 101.9MB in the beginning and 100.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,306 INFO L158 Benchmark]: RCFGBuilder took 347.19ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 90.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,307 INFO L158 Benchmark]: CodeCheck took 31958.67ms. Allocated memory was 130.0MB in the beginning and 272.6MB in the end (delta: 142.6MB). Free memory was 90.1MB in the beginning and 182.4MB in the end (delta: -92.2MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,307 INFO L158 Benchmark]: Witness Printer took 69.20ms. Allocated memory is still 272.6MB. Free memory was 182.4MB in the beginning and 179.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:54:59,310 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.0s, OverallIterations: 43, 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, 5316 SdHoareTripleChecker+Valid, 42.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1283 mSDsluCounter, 2748 SdHoareTripleChecker+Invalid, 34.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1728 mSDsCounter, 8769 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17800 IncrementalHoareTripleChecker+Invalid, 26569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8769 mSolverCounterUnsat, 1020 mSDtfsCounter, 17800 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20935 GetRequests, 20072 SyntacticMatches, 607 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39976 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 3210 NumberOfCodeBlocks, 3210 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3168 ConstructedInterpolants, 0 QuantifiedInterpolants, 9259 SizeOfPredicates, 67 NumberOfNonLiveVariables, 7930 ConjunctsInSsa, 776 ConjunctsInUnsatCore, 42 InterpolantComputations, 3 PerfectInterpolantSequences, 18484/19730 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: 30]: Loop Invariant Derived loop invariant: (((((((16 == s && 3 == a) || (s == 36 && 5 == a)) || (9 == s && 2 == a)) || (s == 2 + 2 * a && 2 == 2 * a)) || ((((((!(5 == t && 2 == a) && !(6 == a && t == 13)) && !(t == 1 + 2 * a && 2 == 2 * a)) && !(9 == t && a == 4)) && !(t == 15 && 7 == a)) && !(t == 11 && 5 == a)) && !(7 == t && 3 == a))) || (49 == s && t == 13)) || (7 == a && 64 == s)) || (s == 25 && a == 4) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.77ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 51.0MB in the beginning and 103.5MB in the end (delta: -52.5MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.31ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 101.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.43ms. Allocated memory is still 130.0MB. Free memory was 101.9MB in the beginning and 100.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.19ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 90.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 31958.67ms. Allocated memory was 130.0MB in the beginning and 272.6MB in the end (delta: 142.6MB). Free memory was 90.1MB in the beginning and 182.4MB in the end (delta: -92.2MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * Witness Printer took 69.20ms. Allocated memory is still 272.6MB. Free memory was 182.4MB in the beginning and 179.2MB 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 00:54:59,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed43208-217a-4c9d-a63d-23a18e47556c/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