./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a30117ea67da7ac225ce18e973cec599f65286a6c4d21e14ad533353de0389bf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:22:55,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:22:55,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:22:55,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:22:55,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:22:55,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:22:55,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:22:55,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:22:55,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:22:55,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:22:55,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:22:55,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:22:55,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:22:55,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:22:55,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:22:55,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:22:55,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:22:55,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:22:55,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:22:55,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:22:55,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:22:55,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:22:55,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:22:55,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:22:55,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:22:55,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:22:55,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:22:55,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:22:55,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:22:55,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:22:55,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:22:55,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:22:55,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:22:55,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:22:55,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:22:55,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:22:55,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:22:55,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:22:55,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:22:55,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:22:55,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:22:55,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:22:55,454 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:22:55,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:22:55,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:22:55,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:22:55,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:22:55,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:22:55,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:22:55,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:22:55,459 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:22:55,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:22:55,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:22:55,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:22:55,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:22:55,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:22:55,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:22:55,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:22:55,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:22:55,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:22:55,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:22:55,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:22:55,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:22:55,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:22:55,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:22:55,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:22:55,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:22:55,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:22:55,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:22:55,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:22:55,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:22:55,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:22:55,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a30117ea67da7ac225ce18e973cec599f65286a6c4d21e14ad533353de0389bf [2022-11-02 20:22:55,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:22:55,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:22:55,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:22:55,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:22:55,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:22:55,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-back-serstep.c [2022-11-02 20:22:55,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/data/b548d7cdb/1848ac75c02b4bd294f5f3b2745e426f/FLAG8a1fa7260 [2022-11-02 20:22:56,656 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:22:56,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-back-serstep.c [2022-11-02 20:22:56,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/data/b548d7cdb/1848ac75c02b4bd294f5f3b2745e426f/FLAG8a1fa7260 [2022-11-02 20:22:56,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/data/b548d7cdb/1848ac75c02b4bd294f5f3b2745e426f [2022-11-02 20:22:56,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:22:56,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:22:56,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:22:56,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:22:56,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:22:56,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:22:56" (1/1) ... [2022-11-02 20:22:56,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f788556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:56, skipping insertion in model container [2022-11-02 20:22:56,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:22:56" (1/1) ... [2022-11-02 20:22:56,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:22:57,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:22:57,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-back-serstep.c[1014,1027] [2022-11-02 20:22:57,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:22:57,733 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:22:57,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-back-serstep.c[1014,1027] [2022-11-02 20:22:57,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:22:57,891 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:22:57,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57 WrapperNode [2022-11-02 20:22:57,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:22:57,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:22:57,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:22:57,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:22:57,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:57,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,174 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1199 [2022-11-02 20:22:58,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:22:58,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:22:58,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:22:58,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:22:58,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:22:58,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:22:58,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:22:58,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:22:58,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (1/1) ... [2022-11-02 20:22:58,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:22:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:22:58,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:22:58,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:22:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:22:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:22:58,988 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:22:58,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:23:11,239 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:23:11,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:23:11,250 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:23:11,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:23:11 BoogieIcfgContainer [2022-11-02 20:23:11,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:23:11,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:23:11,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:23:11,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:23:11,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:22:56" (1/3) ... [2022-11-02 20:23:11,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e82d285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:23:11, skipping insertion in model container [2022-11-02 20:23:11,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:22:57" (2/3) ... [2022-11-02 20:23:11,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e82d285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:23:11, skipping insertion in model container [2022-11-02 20:23:11,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:23:11" (3/3) ... [2022-11-02 20:23:11,267 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.1.prop1-back-serstep.c [2022-11-02 20:23:11,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:23:11,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:23:11,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:23:11,382 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fd6b62b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:23:11,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:23:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 76 states have internal predecessors, (112), 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) [2022-11-02 20:23:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:23:11,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:11,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:23:11,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:23:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:23:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:11,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829160845] [2022-11-02 20:23:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:23:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:14,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829160845] [2022-11-02 20:23:14,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829160845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:14,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:14,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:23:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496779264] [2022-11-02 20:23:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:14,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:23:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:23:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:23:14,370 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 76 states have internal predecessors, (112), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:15,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:17,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:17,800 INFO L93 Difference]: Finished difference Result 217 states and 324 transitions. [2022-11-02 20:23:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:23:17,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:23:17,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:17,835 INFO L225 Difference]: With dead ends: 217 [2022-11-02 20:23:17,835 INFO L226 Difference]: Without dead ends: 142 [2022-11-02 20:23:17,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:23:17,845 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 302 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:17,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 209 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 20:23:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-02 20:23:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 75. [2022-11-02 20:23:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 74 states have internal predecessors, (108), 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) [2022-11-02 20:23:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2022-11-02 20:23:17,923 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 5 [2022-11-02 20:23:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:17,924 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2022-11-02 20:23:17,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2022-11-02 20:23:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:23:17,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:17,933 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:23:17,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:23:17,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:23:17,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1917627193, now seen corresponding path program 1 times [2022-11-02 20:23:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343720306] [2022-11-02 20:23:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:18,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:18,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103326971] [2022-11-02 20:23:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:18,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:18,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:18,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:18,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:23:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:33,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:23:33,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:23:34,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:34,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343720306] [2022-11-02 20:23:34,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103326971] [2022-11-02 20:23:34,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103326971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:34,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:34,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:23:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394478017] [2022-11-02 20:23:34,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:34,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:23:34,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:34,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:23:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:23:34,563 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2022-11-02 20:23:36,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:23:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:37,351 INFO L93 Difference]: Finished difference Result 282 states and 413 transitions. [2022-11-02 20:23:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:23:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 74 [2022-11-02 20:23:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:37,360 INFO L225 Difference]: With dead ends: 282 [2022-11-02 20:23:37,361 INFO L226 Difference]: Without dead ends: 211 [2022-11-02 20:23:37,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:23:37,363 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 302 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:37,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 488 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:23:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-02 20:23:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 141. [2022-11-02 20:23:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4714285714285715) internal successors, (206), 140 states have internal predecessors, (206), 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) [2022-11-02 20:23:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 206 transitions. [2022-11-02 20:23:37,384 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 206 transitions. Word has length 74 [2022-11-02 20:23:37,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:37,385 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 206 transitions. [2022-11-02 20:23:37,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2022-11-02 20:23:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 206 transitions. [2022-11-02 20:23:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:23:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:37,394 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:23:37,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:23:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:37,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:23:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1915780151, now seen corresponding path program 1 times [2022-11-02 20:23:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425724712] [2022-11-02 20:23:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:37,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:37,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275045622] [2022-11-02 20:23:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:37,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:37,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:37,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95542ce-f3ef-4bac-a5c4-bed1451065c3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:23:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:50,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-02 20:23:50,969 INFO L286 TraceCheckSpWp]: Computing forward predicates...