./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.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_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/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_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/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_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/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 6a75c78e244f6d3889d1edeada6af6fc9e49b36bf607d5f65b62dab207b9a9d2 --- 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 20:50:17,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:50:17,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:50:17,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:50:17,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:50:17,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:50:17,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:50:17,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:50:17,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:50:17,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:50:17,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:50:17,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:50:17,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:50:17,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:50:17,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:50:17,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:50:17,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:50:17,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:50:17,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:50:17,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:50:17,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:50:17,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:50:17,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:50:17,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:50:17,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:50:17,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:50:17,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:50:17,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:50:17,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:50:17,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:50:17,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:50:17,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:50:17,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:50:17,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:50:17,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:50:17,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:50:17,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:50:17,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:50:17,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:50:17,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:50:17,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:50:17,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:50:17,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:50:17,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:50:17,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:50:17,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:50:17,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:50:17,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:50:17,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:50:17,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:50:17,758 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:50:17,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:50:17,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:50:17,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:50:17,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:50:17,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:50:17,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:50:17,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:50:17,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:50:17,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:50:17,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:50:17,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:50:17,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:50:17,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:17,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:50:17,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:50:17,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:50:17,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:50:17,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:50:17,763 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:50:17,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:50:17,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:50:17,763 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_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a75c78e244f6d3889d1edeada6af6fc9e49b36bf607d5f65b62dab207b9a9d2 [2022-11-02 20:50:18,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:50:18,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:50:18,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:50:18,093 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:50:18,094 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:50:18,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.c [2022-11-02 20:50:18,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/data/e7c408069/03412113ad784a64a99177dac5c26518/FLAG26b5ba2b2 [2022-11-02 20:50:19,095 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:50:19,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.c [2022-11-02 20:50:19,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/data/e7c408069/03412113ad784a64a99177dac5c26518/FLAG26b5ba2b2 [2022-11-02 20:50:19,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/data/e7c408069/03412113ad784a64a99177dac5c26518 [2022-11-02 20:50:19,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:50:19,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:50:19,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:19,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:50:19,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:50:19,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:19" (1/1) ... [2022-11-02 20:50:19,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a9cb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:19, skipping insertion in model container [2022-11-02 20:50:19,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:19" (1/1) ... [2022-11-02 20:50:19,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:50:19,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:50:20,115 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_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.c[1110,1123] [2022-11-02 20:50:21,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:21,267 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:50:21,280 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_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.c[1110,1123] [2022-11-02 20:50:21,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:22,010 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:50:22,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22 WrapperNode [2022-11-02 20:50:22,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:22,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:22,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:50:22,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:50:22,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:22,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:23,529 INFO L138 Inliner]: procedures = 11, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 14562 [2022-11-02 20:50:23,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:23,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:50:23,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:50:23,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:50:23,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:23,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:23,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:23,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:24,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:24,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:24,602 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:24,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:24,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:50:24,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:50:24,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:50:24,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:50:24,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (1/1) ... [2022-11-02 20:50:24,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:24,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:50:24,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebd1b3-ee2b-4663-99b3-e449df3923d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:50:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:50:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:50:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:50:24,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:50:26,794 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:50:26,797 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:40,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:40,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:40,028 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:51:40,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:40 BoogieIcfgContainer [2022-11-02 20:51:40,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:40,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:51:40,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:51:40,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:51:40,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:50:19" (1/3) ... [2022-11-02 20:51:40,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a77c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:40, skipping insertion in model container [2022-11-02 20:51:40,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:22" (2/3) ... [2022-11-02 20:51:40,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a77c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:40, skipping insertion in model container [2022-11-02 20:51:40,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:40" (3/3) ... [2022-11-02 20:51:40,046 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n5_w8_d64_e0.c [2022-11-02 20:51:40,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:51:40,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:51:40,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:51:40,180 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;@4f0cf352, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:51:40,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:51:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 2049 states, 2030 states have (on average 1.4955665024630542) internal successors, (3036), 2031 states have internal predecessors, (3036), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:51:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2022-11-02 20:51:40,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:40,241 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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 20:51:40,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1267476293, now seen corresponding path program 1 times [2022-11-02 20:51:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:40,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586276081] [2022-11-02 20:51:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:53:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:53:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:53:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:53:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:53:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:53:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:53:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:53:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:53:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:53:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:53:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:53:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:53:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:53:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:53:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:53:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-11-02 20:53:08,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:08,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586276081] [2022-11-02 20:53:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586276081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:08,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:08,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:53:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77408996] [2022-11-02 20:53:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:08,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:53:08,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:53:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:53:08,591 INFO L87 Difference]: Start difference. First operand has 2049 states, 2030 states have (on average 1.4955665024630542) internal successors, (3036), 2031 states have internal predecessors, (3036), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 20:53:11,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:53:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:14,221 INFO L93 Difference]: Finished difference Result 6354 states and 9573 transitions. [2022-11-02 20:53:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:53:14,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 747 [2022-11-02 20:53:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:14,260 INFO L225 Difference]: With dead ends: 6354 [2022-11-02 20:53:14,260 INFO L226 Difference]: Without dead ends: 4307 [2022-11-02 20:53:14,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:53:14,278 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 17771 mSDsluCounter, 6661 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17771 SdHoareTripleChecker+Valid, 10024 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:14,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17771 Valid, 10024 Invalid, 151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-02 20:53:14,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2022-11-02 20:53:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 2075. [2022-11-02 20:53:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2057 states have (on average 1.4939231891103548) internal successors, (3073), 2057 states have internal predecessors, (3073), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:53:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3105 transitions. [2022-11-02 20:53:14,472 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3105 transitions. Word has length 747 [2022-11-02 20:53:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:14,474 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 3105 transitions. [2022-11-02 20:53:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 20:53:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3105 transitions. [2022-11-02 20:53:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2022-11-02 20:53:14,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:14,502 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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 20:53:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:53:14,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1716703363, now seen corresponding path program 1 times [2022-11-02 20:53:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:14,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18568922] [2022-11-02 20:53:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms