./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE --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 78864722a29653368507db3b60ae2b93b33238a95b17a045203976708a818f43 ........................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:15:42,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:15:42,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:15:42,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:15:42,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:15:42,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:15:42,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:15:42,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:15:42,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:15:42,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:15:42,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:15:42,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:15:42,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:15:42,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:15:42,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:15:42,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:15:42,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:15:42,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:15:42,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:15:42,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:15:42,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:15:42,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:15:42,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:15:42,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:15:42,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:15:42,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:15:42,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:15:42,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:15:42,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:15:42,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:15:42,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:15:42,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:15:42,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:15:42,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:15:42,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:15:42,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:15:42,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:15:42,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:15:42,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:15:42,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:15:42,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:15:42,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:15:42,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:15:42,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:15:42,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:15:42,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:15:42,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:15:42,395 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:15:42,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:15:42,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:15:42,402 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:15:42,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:15:42,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:15:42,404 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:15:42,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:15:42,405 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:15:42,405 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:15:42,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:15:42,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:15:42,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:15:42,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:15:42,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:15:42,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:15:42,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:15:42,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:15:42,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:15:42,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:15:42,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:15:42,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:15:42,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:15:42,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:15:42,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:15:42,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:15:42,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:15:42,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:15:42,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:15:42,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:15:42,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:15:42,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:15:42,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:15:42,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:15:42,416 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_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78864722a29653368507db3b60ae2b93b33238a95b17a045203976708a818f43 [2021-10-24 11:15:42,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:15:42,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:15:42,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:15:42,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:15:42,694 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:15:42,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c [2021-10-24 11:15:42,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/data/1d77051e0/bc479284116948eda02c65f9084ebf31/FLAGbd0d84a33 [2021-10-24 11:15:43,238 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:15:43,239 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c [2021-10-24 11:15:43,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/data/1d77051e0/bc479284116948eda02c65f9084ebf31/FLAGbd0d84a33 [2021-10-24 11:15:43,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/data/1d77051e0/bc479284116948eda02c65f9084ebf31 [2021-10-24 11:15:43,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:15:43,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:15:43,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:15:43,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:15:43,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:15:43,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f790b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43, skipping insertion in model container [2021-10-24 11:15:43,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:15:43,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:15:43,844 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_f2ed95b6-cdb9-4cca-baab-968006330f7f/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c[555,568] [2021-10-24 11:15:43,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:15:43,862 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:15:43,872 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_f2ed95b6-cdb9-4cca-baab-968006330f7f/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound50.c[555,568] [2021-10-24 11:15:43,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:15:43,889 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:15:43,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43 WrapperNode [2021-10-24 11:15:43,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:15:43,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:15:43,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:15:43,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:15:43,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:15:43,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:15:43,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:15:43,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:15:43,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:15:43,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:15:43,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:15:43,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:15:43,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (1/1) ... [2021-10-24 11:15:43,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:15:44,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:15:44,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:15:44,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:15:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:15:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:15:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:15:44,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:15:44,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:15:44,323 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-24 11:15:44,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:15:44 BoogieIcfgContainer [2021-10-24 11:15:44,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:15:44,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:15:44,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:15:44,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:15:44,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:15:43" (1/3) ... [2021-10-24 11:15:44,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e31173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:15:44, skipping insertion in model container [2021-10-24 11:15:44,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:15:43" (2/3) ... [2021-10-24 11:15:44,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e31173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:15:44, skipping insertion in model container [2021-10-24 11:15:44,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:15:44" (3/3) ... [2021-10-24 11:15:44,334 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound50.c [2021-10-24 11:15:44,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:15:44,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 11:15:44,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:15:44,419 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 [2021-10-24 11:15:44,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 11:15:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-10-24 11:15:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 11:15:44,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:15:44,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 11:15:44,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:15:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:15:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash 71331668, now seen corresponding path program 1 times [2021-10-24 11:15:44,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:15:44,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682869782] [2021-10-24 11:15:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:15:44,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:15:44,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:15:44,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645161144] [2021-10-24 11:15:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:15:44,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:15:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:15:44,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:15:44,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 11:15:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:15:44,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 11:15:44,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:15:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:15:44,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:15:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:15:44,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:15:44,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682869782] [2021-10-24 11:15:44,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:15:44,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645161144] [2021-10-24 11:15:44,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645161144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:15:44,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:15:44,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:15:44,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979545891] [2021-10-24 11:15:44,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:15:44,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:15:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:15:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:15:44,978 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-24 11:15:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:15:45,290 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-24 11:15:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:15:45,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 [2021-10-24 11:15:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:15:45,314 INFO L225 Difference]: With dead ends: 29 [2021-10-24 11:15:45,314 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 11:15:45,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 11:15:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 11:15:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 9. [2021-10-24 11:15:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-10-24 11:15:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-24 11:15:45,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2021-10-24 11:15:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:15:45,358 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-24 11:15:45,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-24 11:15:45,359 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-24 11:15:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 11:15:45,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:15:45,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 11:15:45,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:15:45,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 11:15:45,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:15:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:15:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2083729231, now seen corresponding path program 1 times [2021-10-24 11:15:45,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:15:45,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537875444] [2021-10-24 11:15:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:15:45,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:15:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:15:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:15:45,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:15:45,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537875444] [2021-10-24 11:15:45,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537875444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:15:45,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:15:45,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:15:45,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127374734] [2021-10-24 11:15:45,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:15:45,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:15:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:15:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:15:45,695 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-24 11:15:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:15:45,712 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-24 11:15:45,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:15:45,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 [2021-10-24 11:15:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:15:45,713 INFO L225 Difference]: With dead ends: 15 [2021-10-24 11:15:45,714 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 11:15:45,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:15:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 11:15:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 11:15:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-24 11:15:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-24 11:15:45,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-10-24 11:15:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:15:45,731 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-24 11:15:45,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2021-10-24 11:15:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-24 11:15:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 11:15:45,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:15:45,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:15:45,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 11:15:45,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:15:45,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:15:45,734 INFO L82 PathProgramCache]: Analyzing trace with hash -962203318, now seen corresponding path program 1 times [2021-10-24 11:15:45,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:15:45,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286666983] [2021-10-24 11:15:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:15:45,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:15:45,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:15:45,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030521611] [2021-10-24 11:15:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:15:45,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:15:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:15:45,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:15:45,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 11:15:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:15:45,839 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:15:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:15:45,884 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:15:45,885 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:15:45,886 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:15:45,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:15:45,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:15:46,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:15:46,124 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:15:46,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:15:46 BoogieIcfgContainer [2021-10-24 11:15:46,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:15:46,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:15:46,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:15:46,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:15:46,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:15:44" (3/4) ... [2021-10-24 11:15:46,154 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:15:46,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:15:46,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:15:46,198 INFO L168 Benchmark]: Toolchain (without parser) took 2556.00 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 74.7 MB in the beginning and 102.0 MB in the end (delta: -27.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:15:46,199 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:15:46,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.96 ms. Allocated memory is still 111.1 MB. Free memory was 74.6 MB in the beginning and 86.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:15:46,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.47 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 84.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:15:46,201 INFO L168 Benchmark]: Boogie Preprocessor took 41.36 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 84.0 MB in the end (delta: 933.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:15:46,202 INFO L168 Benchmark]: RCFGBuilder took 344.46 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 73.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:15:46,203 INFO L168 Benchmark]: TraceAbstraction took 1822.69 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 72.8 MB in the beginning and 104.1 MB in the end (delta: -31.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:15:46,204 INFO L168 Benchmark]: Witness Printer took 45.96 ms. Allocated memory is still 134.2 MB. Free memory was 104.1 MB in the beginning and 102.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:15:46,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.96 ms. Allocated memory is still 111.1 MB. Free memory was 74.6 MB in the beginning and 86.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.47 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 84.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.36 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 84.0 MB in the end (delta: 933.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.46 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 73.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1822.69 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 72.8 MB in the beginning and 104.1 MB in the end (delta: -31.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 45.96 ms. Allocated memory is still 134.2 MB. Free memory was 104.1 MB in the beginning and 102.0 MB in the end (delta: 2.1 MB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND TRUE !(c < k) VAL [counter=1] [L45] x = x * (z - 1) [L16] COND TRUE !(cond) VAL [counter=1] [L18] reach_error() VAL [counter=1] - UnprovableResult [Line: 18]: 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, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1727.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.1ms, AutomataDifference: 378.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 17 SDslu, 25 SDs, 0 SdLazy, 23 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 277.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.3ms SsaConstructionTime, 65.8ms SatisfiabilityAnalysisTime, 333.6ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 4 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-10-24 11:15:46,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ed95b6-cdb9-4cca-baab-968006330f7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...