./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:51,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:51,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:51,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:51,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:51,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:51,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:51,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:51,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:51,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:51,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:51,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:51,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:51,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:51,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:51,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:51,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:51,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:51,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:51,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:51,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:51,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:51,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:51,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:51,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:51,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:51,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:51,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:51,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:51,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:51,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:51,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:51,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:51,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:51,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:51,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:51,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:51,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:51,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:51,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:51,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:51,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:29:51,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:51,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:51,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:51,311 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:51,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:51,312 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:51,312 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:29:51,312 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:51,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:51,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:29:51,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:29:51,320 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:51,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:29:51,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:29:51,320 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:29:51,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:51,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:29:51,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:29:51,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:29:51,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:51,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:51,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:51,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:51,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:51,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:29:51,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:51,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:51,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:51,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:51,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:51,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:51,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:51,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:51,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:51,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:29:51,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:29:51,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:51,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:51,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:51,328 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c [2021-11-07 01:29:51,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:51,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:51,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:51,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:51,614 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:51,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-07 01:29:51,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/4fdc14c03/60bad9e324284eceb3cdffc48fd880e5/FLAG6eff2a881 [2021-11-07 01:29:52,078 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:52,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-07 01:29:52,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/4fdc14c03/60bad9e324284eceb3cdffc48fd880e5/FLAG6eff2a881 [2021-11-07 01:29:52,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/4fdc14c03/60bad9e324284eceb3cdffc48fd880e5 [2021-11-07 01:29:52,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:52,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:52,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:52,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:52,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:52,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f9551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52, skipping insertion in model container [2021-11-07 01:29:52,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:52,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:52,690 WARN L228 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_eb88827a-337f-44bc-8bf2-1d7b78cb3482/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-07 01:29:52,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:52,724 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:52,736 WARN L228 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_eb88827a-337f-44bc-8bf2-1d7b78cb3482/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-07 01:29:52,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:52,760 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:52,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52 WrapperNode [2021-11-07 01:29:52,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:52,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:52,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:52,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:52,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:52,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:52,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:52,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:52,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:52,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:52,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:52,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:52,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (1/1) ... [2021-11-07 01:29:52,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:52,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:52,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:53,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:29:53,176 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 01:29:53,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:53 BoogieIcfgContainer [2021-11-07 01:29:53,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:29:53,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:29:53,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:29:53,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:29:53,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:52" (1/3) ... [2021-11-07 01:29:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deb48c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:53, skipping insertion in model container [2021-11-07 01:29:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:52" (2/3) ... [2021-11-07 01:29:53,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deb48c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:53, skipping insertion in model container [2021-11-07 01:29:53,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:53" (3/3) ... [2021-11-07 01:29:53,187 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-11-07 01:29:53,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:29:53,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:29:53,241 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:29:53,248 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:29:53,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:29:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:29:53,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:53,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:29:53,269 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:29:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash 114241630, now seen corresponding path program 1 times [2021-11-07 01:29:53,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:53,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599478813] [2021-11-07 01:29:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:53,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:53,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:53,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599478813] [2021-11-07 01:29:53,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599478813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:53,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:53,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:29:53,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997955013] [2021-11-07 01:29:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:29:53,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:29:53,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:29:53,437 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:53,453 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-11-07 01:29:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:29:53,455 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:29:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:53,462 INFO L225 Difference]: With dead ends: 57 [2021-11-07 01:29:53,463 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 01:29:53,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:29:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 01:29:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-07 01:29:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-07 01:29:53,511 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-11-07 01:29:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:53,512 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-07 01:29:53,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-07 01:29:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:29:53,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:53,513 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:29:53,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:29:53,514 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:29:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash 112890113, now seen corresponding path program 1 times [2021-11-07 01:29:53,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:53,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283930718] [2021-11-07 01:29:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:53,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:53,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:29:53,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953278105] [2021-11-07 01:29:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:53,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:29:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:53,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:29:53,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:29:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:29:53,722 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:29:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:29:53,768 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:29:53,769 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:29:53,770 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:53,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:53,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:53,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:53,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:53,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:53,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:54,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:29:54,004 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:29:54,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:29:54,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:29:54 BoogieIcfgContainer [2021-11-07 01:29:54,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:29:54,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:29:54,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:29:54,042 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:29:54,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:53" (3/4) ... [2021-11-07 01:29:54,046 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:29:54,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:29:54,048 INFO L168 Benchmark]: Toolchain (without parser) took 1547.18 ms. Allocated memory is still 127.9 MB. Free memory was 90.6 MB in the beginning and 61.3 MB in the end (delta: 29.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:54,049 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 100.7 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:54,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.48 ms. Allocated memory is still 127.9 MB. Free memory was 90.6 MB in the beginning and 101.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:54,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.88 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 99.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:54,051 INFO L168 Benchmark]: Boogie Preprocessor took 24.48 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:54,052 INFO L168 Benchmark]: RCFGBuilder took 355.11 ms. Allocated memory is still 127.9 MB. Free memory was 97.9 MB in the beginning and 86.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:54,053 INFO L168 Benchmark]: TraceAbstraction took 848.09 ms. Allocated memory is still 127.9 MB. Free memory was 86.5 MB in the beginning and 61.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:54,053 INFO L168 Benchmark]: Witness Printer took 14.47 ms. Allocated memory is still 127.9 MB. Free memory was 61.9 MB in the beginning and 61.3 MB in the end (delta: 587.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:54,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 100.7 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.48 ms. Allocated memory is still 127.9 MB. Free memory was 90.6 MB in the beginning and 101.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.88 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 99.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.48 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 355.11 ms. Allocated memory is still 127.9 MB. Free memory was 97.9 MB in the beginning and 86.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 848.09 ms. Allocated memory is still 127.9 MB. Free memory was 86.5 MB in the beginning and 61.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 14.47 ms. Allocated memory is still 127.9 MB. Free memory was 61.9 MB in the beginning and 61.3 MB in the end (delta: 587.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:29:54,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:56,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:56,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:56,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:56,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:56,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:56,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:56,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:56,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:56,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:56,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:56,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:56,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:56,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:56,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:56,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:56,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:56,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:56,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:56,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:56,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:56,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:56,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:56,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:56,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:56,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:56,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:56,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:56,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:56,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:56,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:56,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:56,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:56,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:56,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:56,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:56,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:56,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:56,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:56,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:56,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:56,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:29:56,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:56,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:56,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:56,565 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:56,565 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:56,565 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:56,565 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:56,565 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:56,566 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:56,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:56,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:29:56,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:29:56,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:56,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:56,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:56,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:56,568 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:56,568 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:29:56,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:29:56,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:29:56,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:56,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:56,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:56,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:56,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:29:56,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:56,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:56,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:56,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:56,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:56,573 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:29:56,573 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:56,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:56,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:56,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:56,574 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c [2021-11-07 01:29:56,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:56,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:56,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:56,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:56,983 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:56,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-07 01:29:57,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/dddb718d2/4365daba2c90467c8b48aaf61b42dd35/FLAGe8229880c [2021-11-07 01:29:57,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:57,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-07 01:29:57,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/dddb718d2/4365daba2c90467c8b48aaf61b42dd35/FLAGe8229880c [2021-11-07 01:29:57,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/data/dddb718d2/4365daba2c90467c8b48aaf61b42dd35 [2021-11-07 01:29:57,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:57,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:57,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:57,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:57,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:57,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:57" (1/1) ... [2021-11-07 01:29:57,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72cf71c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:57, skipping insertion in model container [2021-11-07 01:29:57,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:57" (1/1) ... [2021-11-07 01:29:57,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:57,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:58,066 WARN L228 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_eb88827a-337f-44bc-8bf2-1d7b78cb3482/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-07 01:29:58,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:58,105 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:58,116 WARN L228 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_eb88827a-337f-44bc-8bf2-1d7b78cb3482/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-07 01:29:58,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:58,188 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:58,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58 WrapperNode [2021-11-07 01:29:58,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:58,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:58,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:58,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:58,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:58,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:58,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:58,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:58,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:58,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:58,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:58,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:58,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (1/1) ... [2021-11-07 01:29:58,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:58,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:58,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:58,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:58,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:58,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:58,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:58,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:30:10,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:30:10,019 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 01:30:10,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:30:10 BoogieIcfgContainer [2021-11-07 01:30:10,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:30:10,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:30:10,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:30:10,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:30:10,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:57" (1/3) ... [2021-11-07 01:30:10,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a89bf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:30:10, skipping insertion in model container [2021-11-07 01:30:10,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:58" (2/3) ... [2021-11-07 01:30:10,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a89bf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:30:10, skipping insertion in model container [2021-11-07 01:30:10,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:30:10" (3/3) ... [2021-11-07 01:30:10,030 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-11-07 01:30:10,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:30:10,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:30:10,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:30:10,085 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:30:10,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:30:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:30:10,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:10,104 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:30:10,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:30:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-11-07 01:30:10,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:10,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810364657] [2021-11-07 01:30:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:10,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:10,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:10,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:10,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:30:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:10,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:30:10,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:10,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:10,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:10,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810364657] [2021-11-07 01:30:10,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810364657] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:10,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:10,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:30:10,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906566965] [2021-11-07 01:30:10,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:30:10,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:30:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:30:10,520 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:10,539 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-11-07 01:30:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:30:10,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:30:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:10,549 INFO L225 Difference]: With dead ends: 62 [2021-11-07 01:30:10,549 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 01:30:10,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:30:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 01:30:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-07 01:30:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-07 01:30:10,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-11-07 01:30:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:10,587 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-07 01:30:10,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-07 01:30:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:30:10,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:10,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:30:10,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:10,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:10,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:30:10,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-07 01:30:10,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:10,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754635496] [2021-11-07 01:30:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:10,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:10,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:10,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:10,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:30:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:10,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:30:10,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:11,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:18,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:18,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754635496] [2021-11-07 01:30:18,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754635496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:18,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:18,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:30:18,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564669416] [2021-11-07 01:30:18,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:30:18,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:30:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:30:18,228 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:37,626 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-07 01:30:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:30:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:30:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:37,628 INFO L225 Difference]: With dead ends: 39 [2021-11-07 01:30:37,628 INFO L226 Difference]: Without dead ends: 35 [2021-11-07 01:30:37,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:30:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-07 01:30:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-07 01:30:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-07 01:30:37,638 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-11-07 01:30:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:37,653 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-07 01:30:37,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-07 01:30:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:30:37,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:37,655 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:37,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:37,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:37,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:30:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-11-07 01:30:37,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:37,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305127303] [2021-11-07 01:30:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:37,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:37,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:37,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:30:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:39,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:30:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:41,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:47,380 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-11-07 01:30:49,420 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-11-07 01:31:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:10,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:10,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305127303] [2021-11-07 01:31:10,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305127303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:10,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:10,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-07 01:31:10,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259430503] [2021-11-07 01:31:10,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:31:10,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:31:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-11-07 01:31:10,668 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:20,135 WARN L207 SmtUtils]: Spent 5.52 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-07 01:31:27,413 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-11-07 01:31:30,219 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-07 01:32:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:30,853 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-11-07 01:32:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:32:30,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:32:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:30,855 INFO L225 Difference]: With dead ends: 36 [2021-11-07 01:32:30,855 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 01:32:30,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=26, Invalid=54, Unknown=4, NotChecked=48, Total=132 [2021-11-07 01:32:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 01:32:30,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-11-07 01:32:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-07 01:32:30,864 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-11-07 01:32:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:30,865 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-07 01:32:30,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-07 01:32:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:32:30,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:30,867 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:30,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:31,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:31,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:32:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-11-07 01:32:31,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:31,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714184259] [2021-11-07 01:32:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:31,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:31,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:31,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:31,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:32:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:31,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:32:31,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:31,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:31,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:31,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714184259] [2021-11-07 01:32:31,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714184259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:31,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:31,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:32:31,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22224143] [2021-11-07 01:32:31,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:32:31,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:32:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:32:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:32:31,873 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:33,454 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-11-07 01:32:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:32:33,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:32:33,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:33,456 INFO L225 Difference]: With dead ends: 64 [2021-11-07 01:32:33,456 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 01:32:33,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:32:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 01:32:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-11-07 01:32:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-07 01:32:33,471 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-11-07 01:32:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:33,471 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-07 01:32:33,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-07 01:32:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:32:33,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:33,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:33,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:32:33,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:33,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:32:33,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:33,675 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-11-07 01:32:33,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:33,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6325211] [2021-11-07 01:32:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:33,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:33,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:33,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:32:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:32:35,338 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:32:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:32:37,739 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:32:37,740 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:32:37,741 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:37,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:37,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:37,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:37,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:37,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:37,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:37,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:37,948 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-07 01:32:37,951 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:32:37,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:32:37 BoogieIcfgContainer [2021-11-07 01:32:37,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:32:37,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:32:37,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:32:37,983 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:32:37,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:30:10" (3/4) ... [2021-11-07 01:32:37,986 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:32:38,042 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:32:38,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:32:38,043 INFO L168 Benchmark]: Toolchain (without parser) took 160148.86 ms. Allocated memory is still 71.3 MB. Free memory was 49.7 MB in the beginning and 51.5 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:38,044 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:38,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.99 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 55.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:38,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.98 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:38,046 INFO L168 Benchmark]: Boogie Preprocessor took 64.34 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 52.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:38,047 INFO L168 Benchmark]: RCFGBuilder took 11684.96 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 40.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:38,048 INFO L168 Benchmark]: TraceAbstraction took 147954.15 ms. Allocated memory is still 71.3 MB. Free memory was 40.2 MB in the beginning and 26.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:38,048 INFO L168 Benchmark]: Witness Printer took 59.86 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:38,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.99 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 55.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.98 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.34 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 52.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11684.96 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 40.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 147954.15 ms. Allocated memory is still 71.3 MB. Free memory was 40.2 MB in the beginning and 26.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.86 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 147.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 101.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 68 SDslu, 171 SDs, 0 SdLazy, 109 SolverSat, 21 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 83.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 34.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 39.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:32:38,281 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-07 01:32:38,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb88827a-337f-44bc-8bf2-1d7b78cb3482/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE