./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.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_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/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_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/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_a9f90ce9-6057-402c-9662-0c7c1a0065d0/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 5a7fa473b022aa2e23bff7f5f7b8857d51e8b48cb53169d649271e1a03b0ebc0 .......................................................................................................................................................................................................................................................................................................................................... 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 10:56:46,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:56:46,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:56:46,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:56:46,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:56:46,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:56:46,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:56:46,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:56:46,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:56:46,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:56:46,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:56:46,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:56:46,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:56:46,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:56:46,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:56:46,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:56:46,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:56:46,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:56:46,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:56:46,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:56:46,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:56:46,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:56:46,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:56:46,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:56:46,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:56:46,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:56:46,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:56:46,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:56:46,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:56:46,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:56:46,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:56:46,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:56:46,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:56:46,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:56:46,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:56:46,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:56:46,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:56:46,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:56:46,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:56:46,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:56:46,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:56:46,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:56:46,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:56:46,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:56:46,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:56:46,348 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:56:46,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:56:46,349 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:56:46,350 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:56:46,350 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:56:46,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:56:46,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:56:46,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:56:46,352 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:56:46,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:56:46,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:56:46,353 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:56:46,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:56:46,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:56:46,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:56:46,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:56:46,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:56:46,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:56:46,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:56:46,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:56:46,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:56:46,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:56:46,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:56:46,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:56:46,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:56:46,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:56:46,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:56:46,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:56:46,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:56:46,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:56:46,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:56:46,362 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:56:46,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:56:46,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:56:46,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:56:46,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:56:46,363 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_a9f90ce9-6057-402c-9662-0c7c1a0065d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a7fa473b022aa2e23bff7f5f7b8857d51e8b48cb53169d649271e1a03b0ebc0 [2021-10-24 10:56:46,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:56:46,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:56:46,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:56:46,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:56:46,709 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:56:46,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c [2021-10-24 10:56:46,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/data/6217e1fc6/02803e2746e84ab09950e5eea8c982e5/FLAG9e264035d [2021-10-24 10:56:47,328 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:56:47,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c [2021-10-24 10:56:47,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/data/6217e1fc6/02803e2746e84ab09950e5eea8c982e5/FLAG9e264035d [2021-10-24 10:56:47,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/data/6217e1fc6/02803e2746e84ab09950e5eea8c982e5 [2021-10-24 10:56:47,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:56:47,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:56:47,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:56:47,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:56:47,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:56:47,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:47,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7337e3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47, skipping insertion in model container [2021-10-24 10:56:47,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:47,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:56:47,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:56:47,904 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_a9f90ce9-6057-402c-9662-0c7c1a0065d0/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2021-10-24 10:56:47,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:56:47,933 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:56:47,955 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_a9f90ce9-6057-402c-9662-0c7c1a0065d0/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2021-10-24 10:56:47,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:56:47,998 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:56:47,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47 WrapperNode [2021-10-24 10:56:47,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:56:48,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:56:48,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:56:48,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:56:48,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:56:48,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:56:48,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:56:48,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:56:48,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:56:48,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:56:48,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:56:48,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:56:48,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (1/1) ... [2021-10-24 10:56:48,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:56:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:56:48,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:56:48,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:56:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:56:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:56:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:56:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:56:48,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:56:48,480 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-24 10:56:48,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:56:48 BoogieIcfgContainer [2021-10-24 10:56:48,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:56:48,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:56:48,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:56:48,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:56:48,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:56:47" (1/3) ... [2021-10-24 10:56:48,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df4455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:56:48, skipping insertion in model container [2021-10-24 10:56:48,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:56:47" (2/3) ... [2021-10-24 10:56:48,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df4455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:56:48, skipping insertion in model container [2021-10-24 10:56:48,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:56:48" (3/3) ... [2021-10-24 10:56:48,503 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound1.c [2021-10-24 10:56:48,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:56:48,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:56:48,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:56:48,587 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 10:56:48,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:56:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 states have internal predecessors, (22), 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 10:56:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:56:48,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:56:48,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:56:48,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:56:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:56:48,619 INFO L82 PathProgramCache]: Analyzing trace with hash 81490399, now seen corresponding path program 1 times [2021-10-24 10:56:48,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:56:48,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445166230] [2021-10-24 10:56:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:56:48,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:56:48,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:56:48,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308124198] [2021-10-24 10:56:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:56:48,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:56:48,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:56:48,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:56:48,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:56:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:56:48,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:56:48,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:56:48,978 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 10:56:48,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:56:49,466 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 10:56:49,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:56:49,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445166230] [2021-10-24 10:56:49,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:56:49,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308124198] [2021-10-24 10:56:49,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308124198] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:56:49,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:56:49,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:56:49,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508524562] [2021-10-24 10:56:49,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:56:49,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:56:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:56:49,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:56:49,490 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 states have internal predecessors, (22), 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 10:56:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:56:50,348 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-10-24 10:56:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:56:50,362 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 10:56:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:56:50,371 INFO L225 Difference]: With dead ends: 40 [2021-10-24 10:56:50,371 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 10:56:50,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:56:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 10:56:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 10:56:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 10:56:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-24 10:56:50,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-10-24 10:56:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:56:50,410 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-24 10:56:50,411 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 10:56:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-24 10:56:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:56:50,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:56:50,412 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:56:50,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:56:50,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:56:50,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:56:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:56:50,628 INFO L82 PathProgramCache]: Analyzing trace with hash 908273882, now seen corresponding path program 1 times [2021-10-24 10:56:50,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:56:50,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278476909] [2021-10-24 10:56:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:56:50,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:56:50,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:56:50,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753551513] [2021-10-24 10:56:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:56:50,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:56:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:56:50,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:56:50,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:56:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:56:50,755 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:56:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:56:50,786 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:56:50,786 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:56:50,788 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:56:50,790 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:56:50,791 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:56:50,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:56:51,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:56:51,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:56:51,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:56:51 BoogieIcfgContainer [2021-10-24 10:56:51,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:56:51,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:56:51,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:56:51,046 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:56:51,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:56:48" (3/4) ... [2021-10-24 10:56:51,048 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:56:51,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:56:51,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:56:51,105 INFO L168 Benchmark]: Toolchain (without parser) took 3407.92 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 55.7 MB in the beginning and 83.2 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:56:51,105 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:56:51,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.29 ms. Allocated memory is still 96.5 MB. Free memory was 55.5 MB in the beginning and 72.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:51,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.69 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:51,108 INFO L168 Benchmark]: Boogie Preprocessor took 48.92 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:51,109 INFO L168 Benchmark]: RCFGBuilder took 388.78 ms. Allocated memory is still 96.5 MB. Free memory was 69.3 MB in the beginning and 58.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:51,110 INFO L168 Benchmark]: TraceAbstraction took 2559.50 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 58.1 MB in the beginning and 85.3 MB in the end (delta: -27.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:56:51,111 INFO L168 Benchmark]: Witness Printer took 57.41 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 83.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:56:51,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.29 ms. Allocated memory is still 96.5 MB. Free memory was 55.5 MB in the beginning and 72.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.69 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.92 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 388.78 ms. Allocated memory is still 96.5 MB. Free memory was 69.3 MB in the beginning and 58.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2559.50 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 58.1 MB in the beginning and 85.3 MB in the end (delta: -27.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.41 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 83.2 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [counter=0] [L27] EXPR counter++ VAL [counter=1] [L27] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=1] [L27] EXPR counter++ VAL [counter=2] [L27] COND FALSE !(counter++<1) [L10] COND TRUE !(cond) VAL [counter=2] [L12] reach_error() VAL [counter=2] - UnprovableResult [Line: 12]: 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: 12]: 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, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2440.3ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 10.3ms, AutomataDifference: 898.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 28 SDslu, 11 SDs, 0 SdLazy, 18 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 753.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 478.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.2ms SsaConstructionTime, 36.8ms SatisfiabilityAnalysisTime, 632.5ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 3 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 10:56:51,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f90ce9-6057-402c-9662-0c7c1a0065d0/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...