./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-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_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/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_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/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_402b6797-e681-447e-ac88-79d06eeab692/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 0af3ae3e1b18402d7b766cf1943edddd3bf558b5da3e0e85ca5f8b1f74f72a1e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:44:23,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:44:23,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:44:23,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:44:23,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:44:23,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:44:23,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:44:23,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:44:23,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:44:23,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:44:23,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:44:23,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:44:23,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:44:23,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:44:23,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:44:23,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:44:23,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:44:23,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:44:23,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:44:23,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:44:23,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:44:23,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:44:23,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:44:23,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:44:23,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:44:23,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:44:23,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:44:23,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:44:23,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:44:23,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:44:23,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:44:23,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:44:23,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:44:23,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:44:23,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:44:23,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:44:23,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:44:23,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:44:23,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:44:23,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:44:23,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:44:23,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:44:23,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:44:23,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:44:23,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:44:23,389 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:44:23,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:44:23,390 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:44:23,390 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:44:23,399 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:44:23,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:44:23,399 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:44:23,400 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:44:23,400 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:44:23,401 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:44:23,401 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:44:23,401 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:44:23,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:44:23,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:44:23,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:44:23,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:44:23,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:44:23,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:44:23,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:44:23,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:44:23,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:44:23,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:44:23,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:44:23,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:44:23,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:44:23,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:44:23,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:44:23,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:44:23,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:44:23,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:44:23,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:44:23,413 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:44:23,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:44:23,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:44:23,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:44:23,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:44:23,414 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_402b6797-e681-447e-ac88-79d06eeab692/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0af3ae3e1b18402d7b766cf1943edddd3bf558b5da3e0e85ca5f8b1f74f72a1e [2021-10-24 10:44:23,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:44:23,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:44:23,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:44:23,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:44:23,797 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:44:23,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-24 10:44:23,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/data/759bbb668/38d4f2911bd542498c1b0acf97317452/FLAGff1a8efa4 [2021-10-24 10:44:24,587 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:44:24,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-24 10:44:24,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/data/759bbb668/38d4f2911bd542498c1b0acf97317452/FLAGff1a8efa4 [2021-10-24 10:44:24,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/data/759bbb668/38d4f2911bd542498c1b0acf97317452 [2021-10-24 10:44:24,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:44:24,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:44:24,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:44:24,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:44:24,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:44:24,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:44:24" (1/1) ... [2021-10-24 10:44:24,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f071e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:24, skipping insertion in model container [2021-10-24 10:44:24,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:44:24" (1/1) ... [2021-10-24 10:44:24,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:44:24,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:44:25,140 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_402b6797-e681-447e-ac88-79d06eeab692/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-24 10:44:25,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:44:25,178 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:44:25,192 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_402b6797-e681-447e-ac88-79d06eeab692/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-24 10:44:25,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:44:25,220 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:44:25,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25 WrapperNode [2021-10-24 10:44:25,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:44:25,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:44:25,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:44:25,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:44:25,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:44:25,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:44:25,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:44:25,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:44:25,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:44:25,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:44:25,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:44:25,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:44:25,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (1/1) ... [2021-10-24 10:44:25,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:44:25,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:25,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:44:25,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:44:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:44:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:44:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:44:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:44:25,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:44:25,865 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-24 10:44:25,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:25 BoogieIcfgContainer [2021-10-24 10:44:25,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:44:25,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:44:25,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:44:25,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:44:25,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:44:24" (1/3) ... [2021-10-24 10:44:25,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e426386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:44:25, skipping insertion in model container [2021-10-24 10:44:25,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:25" (2/3) ... [2021-10-24 10:44:25,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e426386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:44:25, skipping insertion in model container [2021-10-24 10:44:25,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:25" (3/3) ... [2021-10-24 10:44:25,880 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound1.c [2021-10-24 10:44:25,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:44:25,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 10:44:25,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:44:26,002 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 10:44:26,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 10:44:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 25 states have (on average 1.68) internal successors, (42), 32 states have internal predecessors, (42), 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 10:44:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:44:26,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:26,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:44:26,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash 150261929, now seen corresponding path program 1 times [2021-10-24 10:44:26,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:26,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274909802] [2021-10-24 10:44:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:26,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:26,169 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:44:26,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020430084] [2021-10-24 10:44:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:26,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:26,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:26,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:44:26,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:44:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:44:26,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:44:26,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:44:26,544 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 10:44:26,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:44:26,728 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 10:44:26,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:44:26,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274909802] [2021-10-24 10:44:26,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:44:26,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020430084] [2021-10-24 10:44:26,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020430084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:44:26,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:44:26,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:44:26,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354541920] [2021-10-24 10:44:26,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:44:26,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:44:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:44:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:44:26,771 INFO L87 Difference]: Start difference. First operand has 33 states, 25 states have (on average 1.68) internal successors, (42), 32 states have internal predecessors, (42), 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 10:44:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:44:26,990 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2021-10-24 10:44:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:44:26,993 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 10:44:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:44:27,005 INFO L225 Difference]: With dead ends: 93 [2021-10-24 10:44:27,005 INFO L226 Difference]: Without dead ends: 57 [2021-10-24 10:44:27,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:44:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-24 10:44:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-10-24 10:44:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.368421052631579) internal successors, (52), 44 states have internal predecessors, (52), 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 10:44:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-10-24 10:44:27,064 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 5 [2021-10-24 10:44:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:44:27,065 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-10-24 10:44:27,065 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 10:44:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-10-24 10:44:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:44:27,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:27,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:44:27,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:27,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:44:27,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 363136678, now seen corresponding path program 1 times [2021-10-24 10:44:27,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:27,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811439577] [2021-10-24 10:44:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:27,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:44:27,435 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 10:44:27,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:44:27,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811439577] [2021-10-24 10:44:27,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811439577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:44:27,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:44:27,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:44:27,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764182552] [2021-10-24 10:44:27,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:44:27,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:44:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:44:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:44:27,448 INFO L87 Difference]: Start difference. First operand 45 states and 52 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 10:44:27,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:44:27,477 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-10-24 10:44:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:44:27,479 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 10:44:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:44:27,481 INFO L225 Difference]: With dead ends: 59 [2021-10-24 10:44:27,481 INFO L226 Difference]: Without dead ends: 45 [2021-10-24 10:44:27,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:44:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-24 10:44:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-24 10:44:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 44 states have internal predecessors, (51), 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 10:44:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-10-24 10:44:27,506 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 6 [2021-10-24 10:44:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:44:27,507 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-10-24 10:44:27,507 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 10:44:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-10-24 10:44:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:44:27,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:27,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:44:27,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:44:27,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:27,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:27,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1627018292, now seen corresponding path program 1 times [2021-10-24 10:44:27,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:27,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375752179] [2021-10-24 10:44:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:27,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:27,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:44:27,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510533692] [2021-10-24 10:44:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:27,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:27,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:27,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:44:27,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:44:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:44:27,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 10:44:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:44:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:44:27,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:44:27,949 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 10:44:27,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:44:27,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375752179] [2021-10-24 10:44:27,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:44:27,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510533692] [2021-10-24 10:44:27,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510533692] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:44:27,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:44:27,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:44:27,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670827813] [2021-10-24 10:44:27,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:44:27,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:44:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:44:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:44:27,960 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 10:44:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:44:28,082 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-10-24 10:44:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:44:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) Word has length 7 [2021-10-24 10:44:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:44:28,090 INFO L225 Difference]: With dead ends: 57 [2021-10-24 10:44:28,090 INFO L226 Difference]: Without dead ends: 55 [2021-10-24 10:44:28,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:44:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-24 10:44:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-10-24 10:44:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 44 states have internal predecessors, (50), 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 10:44:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-10-24 10:44:28,109 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 7 [2021-10-24 10:44:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:44:28,110 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-10-24 10:44:28,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 10:44:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-10-24 10:44:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:44:28,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:28,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:44:28,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:28,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:28,319 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -196326513, now seen corresponding path program 1 times [2021-10-24 10:44:28,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:28,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789013901] [2021-10-24 10:44:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:28,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:28,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:44:28,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612179739] [2021-10-24 10:44:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:28,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:28,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:28,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:44:28,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:44:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:44:28,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-24 10:44:28,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:44:28,697 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 10:44:28,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:44:28,765 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 10:44:28,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:44:28,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789013901] [2021-10-24 10:44:28,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:44:28,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612179739] [2021-10-24 10:44:28,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612179739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:44:28,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:44:28,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:44:28,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194825477] [2021-10-24 10:44:28,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:44:28,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:44:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:44:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:44:28,770 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:44:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:44:28,859 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-24 10:44:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:44:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:44:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:44:28,860 INFO L225 Difference]: With dead ends: 58 [2021-10-24 10:44:28,860 INFO L226 Difference]: Without dead ends: 50 [2021-10-24 10:44:28,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:44:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-24 10:44:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2021-10-24 10:44:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 42 states have internal predecessors, (46), 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 10:44:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-10-24 10:44:28,872 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 9 [2021-10-24 10:44:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:44:28,873 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-10-24 10:44:28,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:44:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-10-24 10:44:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:44:28,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:28,876 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:44:28,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:29,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:29,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:29,100 INFO L82 PathProgramCache]: Analyzing trace with hash 987236889, now seen corresponding path program 1 times [2021-10-24 10:44:29,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:29,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109903663] [2021-10-24 10:44:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:29,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:29,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:44:29,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381294219] [2021-10-24 10:44:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:29,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:29,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:44:29,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:44:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:44:29,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:44:29,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:44:29,259 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 10:44:29,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:44:29,302 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 10:44:29,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:44:29,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109903663] [2021-10-24 10:44:29,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:44:29,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381294219] [2021-10-24 10:44:29,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381294219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:44:29,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:44:29,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:44:29,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541878713] [2021-10-24 10:44:29,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:44:29,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:44:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:44:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:44:29,312 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 10:44:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:44:29,369 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-24 10:44:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:44:29,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Word has length 12 [2021-10-24 10:44:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:44:29,371 INFO L225 Difference]: With dead ends: 59 [2021-10-24 10:44:29,371 INFO L226 Difference]: Without dead ends: 57 [2021-10-24 10:44:29,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:44:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-24 10:44:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-10-24 10:44:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.236842105263158) internal successors, (47), 44 states have internal predecessors, (47), 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 10:44:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-10-24 10:44:29,377 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 12 [2021-10-24 10:44:29,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:44:29,377 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-10-24 10:44:29,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 10:44:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-10-24 10:44:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:44:29,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:29,378 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:44:29,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:29,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:29,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash 599849724, now seen corresponding path program 1 times [2021-10-24 10:44:29,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:29,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506897430] [2021-10-24 10:44:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:29,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:29,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:44:29,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93041760] [2021-10-24 10:44:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:29,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:29,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:29,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:44:29,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:44:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:44:29,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:44:29,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:44:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:44:29,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:44:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:44:29,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:44:29,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506897430] [2021-10-24 10:44:29,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:44:29,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93041760] [2021-10-24 10:44:29,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93041760] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:44:29,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758424029] [2021-10-24 10:44:29,883 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-24 10:44:29,883 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:44:29,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:44:29,899 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:44:29,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:44:29,954 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-10-24 10:44:29,960 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:44:29,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:29,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:44:29,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:44:29,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:29,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:44:29,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-10-24 10:44:30,009 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 10:44:30,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:44:30,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:44:30,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:44:30,052 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:44:30,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:44:30,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:44:30,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:44:30,092 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:44:30,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:44:30,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:44:30,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:44:30,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:44:30,174 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:44:30,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,193 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,204 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-10-24 10:44:30,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-24 10:44:30,213 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:44:30,217 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-10-24 10:44:30,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-24 10:44:30,258 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-10-24 10:44:30,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-24 10:44:30,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 10:44:30,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-24 10:44:30,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-10-24 10:44:30,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-10-24 10:44:30,377 INFO L180 QuantifierPusher]: treesize reduction 227, result has 0.4 percent of original size [2021-10-24 10:44:30,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:44:30,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 10:44:30,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-24 10:44:30,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-10-24 10:44:30,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:44:30,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:44:30,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-24 10:44:30,792 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:44:31,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [758424029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:44:31,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:44:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2021-10-24 10:44:31,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832564172] [2021-10-24 10:44:31,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:44:31,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:44:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:44:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:44:31,811 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:44:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:44:31,920 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-10-24 10:44:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:44:31,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:44:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:44:31,922 INFO L225 Difference]: With dead ends: 46 [2021-10-24 10:44:31,922 INFO L226 Difference]: Without dead ends: 40 [2021-10-24 10:44:31,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1024.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:44:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-24 10:44:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-10-24 10:44:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 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 10:44:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-24 10:44:31,930 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 13 [2021-10-24 10:44:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:44:31,930 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-24 10:44:31,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:44:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-24 10:44:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:44:31,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:44:31,931 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:44:31,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:32,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:32,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:44:32,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:44:32,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1415456435, now seen corresponding path program 1 times [2021-10-24 10:44:32,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:44:32,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899737872] [2021-10-24 10:44:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:32,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:44:32,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:44:32,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661098559] [2021-10-24 10:44:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:44:32,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:32,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:44:32,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:44:32,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 10:44:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:44:32,267 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:44:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:44:32,306 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:44:32,306 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:44:32,308 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:44:32,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:44:32,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:44:32,540 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:44:32,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:44:32 BoogieIcfgContainer [2021-10-24 10:44:32,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:44:32,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:44:32,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:44:32,576 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:44:32,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:25" (3/4) ... [2021-10-24 10:44:32,579 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:44:32,636 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:44:32,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:44:32,638 INFO L168 Benchmark]: Toolchain (without parser) took 7727.85 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 50.9 MB in the beginning and 81.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:32,638 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:44:32,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.72 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 50.8 MB in the beginning and 92.6 MB in the end (delta: -41.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:32,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.65 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:44:32,640 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 89.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:32,640 INFO L168 Benchmark]: RCFGBuilder took 564.31 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 74.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:32,641 INFO L168 Benchmark]: TraceAbstraction took 6703.82 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 73.8 MB in the beginning and 84.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:32,642 INFO L168 Benchmark]: Witness Printer took 61.14 ms. Allocated memory is still 142.6 MB. Free memory was 84.9 MB in the beginning and 81.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:44:32,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.72 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 50.8 MB in the beginning and 92.6 MB in the end (delta: -41.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.65 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.43 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 89.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 564.31 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 74.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6703.82 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 73.8 MB in the beginning and 84.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Witness Printer took 61.14 ms. Allocated memory is still 142.6 MB. Free memory was 84.9 MB in the beginning and 81.8 MB in the end (delta: 3.1 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) [L42] COND FALSE !(a > b) [L47] b = b - a [L48] q = q - p [L49] s = s - r VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L11] COND TRUE !(cond) VAL [counter=2] [L13] reach_error() VAL [counter=2] - UnprovableResult [Line: 13]: 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: 13]: 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: 13]: 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: 13]: 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: 13]: 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: 13]: 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, 33 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 6562.2ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 18.4ms, AutomataDifference: 700.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 151 SDtfs, 121 SDslu, 243 SDs, 0 SdLazy, 209 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 324.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1190.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 98.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.7ms SsaConstructionTime, 172.5ms SatisfiabilityAnalysisTime, 1425.0ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 2 QuantifiedInterpolants, 435 SizeOfPredicates, 26 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 4/6 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: OVERALL_TIME[ms]: 909, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 19, TOOLS_POST_TIME[ms]: 519, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 19, TOOLS_QUANTIFIERELIM_TIME[ms]: 501, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 272, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 32, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 295, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 27, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 104, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 104, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 16, DAG_COMPRESSION_PROCESSED_NODES: 101, DAG_COMPRESSION_RETAINED_NODES: 37, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 10:44:32,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402b6797-e681-447e-ac88-79d06eeab692/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...