./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/CostasArray-16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/CostasArray-16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW --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 1ca02410bcea12ad170dc6550a8df8687be81b6e0378fb50d7f07fec950b71e2 --- 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-4e7fbc6 [2022-11-23 15:37:37,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:37:37,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:37:37,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:37:37,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:37:37,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:37:37,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:37:37,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:37:37,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:37:37,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:37:37,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:37:37,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:37:37,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:37:37,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:37:37,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:37:37,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:37:37,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:37:37,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:37:37,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:37:37,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:37:37,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:37:37,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:37:37,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:37:37,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:37:37,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:37:37,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:37:37,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:37:37,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:37:37,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:37:37,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:37:37,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:37:37,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:37:37,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:37:37,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:37:37,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:37:37,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:37:37,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:37:37,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:37:37,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:37:37,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:37:37,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:37:37,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:37:37,731 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:37:37,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:37:37,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:37:37,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:37:37,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:37:37,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:37:37,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:37:37,734 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:37:37,735 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:37:37,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:37:37,735 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:37:37,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:37:37,736 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:37:37,736 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:37:37,737 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:37:37,737 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:37:37,737 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:37:37,738 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:37:37,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:37:37,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:37:37,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:37:37,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:37:37,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:37:37,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:37:37,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:37:37,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:37:37,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:37:37,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:37:37,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:37:37,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:37:37,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:37:37,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:37:37,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:37:37,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:37:37,743 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:37:37,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:37:37,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:37:37,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:37:37,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:37:37,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:37:37,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:37:37,745 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_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ca02410bcea12ad170dc6550a8df8687be81b6e0378fb50d7f07fec950b71e2 [2022-11-23 15:37:38,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:37:38,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:37:38,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:37:38,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:37:38,043 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:37:38,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/xcsp/CostasArray-16.c [2022-11-23 15:37:41,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:37:41,585 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:37:41,586 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/sv-benchmarks/c/xcsp/CostasArray-16.c [2022-11-23 15:37:41,600 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/data/c1651048a/3fb3f5f675904b5b81218182bb2456b0/FLAG4749ab387 [2022-11-23 15:37:41,629 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/data/c1651048a/3fb3f5f675904b5b81218182bb2456b0 [2022-11-23 15:37:41,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:37:41,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:37:41,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:37:41,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:37:41,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:37:41,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:41" (1/1) ... [2022-11-23 15:37:41,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeafe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:41, skipping insertion in model container [2022-11-23 15:37:41,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:41" (1/1) ... [2022-11-23 15:37:41,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:37:41,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:37:42,149 WARN L237 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_5fced0c1-4e12-48ab-ac50-6620e3b06326/sv-benchmarks/c/xcsp/CostasArray-16.c[37724,37737] [2022-11-23 15:37:42,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:37:42,196 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:37:42,313 WARN L237 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_5fced0c1-4e12-48ab-ac50-6620e3b06326/sv-benchmarks/c/xcsp/CostasArray-16.c[37724,37737] [2022-11-23 15:37:42,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:37:42,332 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:37:42,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42 WrapperNode [2022-11-23 15:37:42,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:37:42,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:37:42,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:37:42,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:37:42,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,477 INFO L138 Inliner]: procedures = 13, calls = 1187, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1729 [2022-11-23 15:37:42,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:37:42,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:37:42,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:37:42,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:37:42,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:37:42,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:37:42,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:37:42,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:37:42,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (1/1) ... [2022-11-23 15:37:42,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:37:42,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:37:42,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:37:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fced0c1-4e12-48ab-ac50-6620e3b06326/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:37:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:37:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:37:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:37:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:37:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2022-11-23 15:37:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2022-11-23 15:37:42,921 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:37:42,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:37:44,300 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:37:44,345 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:37:44,345 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:37:44,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:44 BoogieIcfgContainer [2022-11-23 15:37:44,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:37:44,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:37:44,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:37:44,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:37:44,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:37:41" (1/3) ... [2022-11-23 15:37:44,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60700813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:44, skipping insertion in model container [2022-11-23 15:37:44,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:42" (2/3) ... [2022-11-23 15:37:44,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60700813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:44, skipping insertion in model container [2022-11-23 15:37:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:44" (3/3) ... [2022-11-23 15:37:44,371 INFO L112 eAbstractionObserver]: Analyzing ICFG CostasArray-16.c [2022-11-23 15:37:44,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:37:44,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:37:44,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:37:44,533 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b868a22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:37:44,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:37:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 1319 states, 136 states have (on average 1.0073529411764706) internal successors, (137), 137 states have internal predecessors, (137), 1180 states have call successors, (1180), 1 states have call predecessors, (1180), 1 states have return successors, (1180), 1180 states have call predecessors, (1180), 1180 states have call successors, (1180) [2022-11-23 15:37:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3676 [2022-11-23 15:37:44,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:37:44,828 INFO L195 NwaCegarLoop]: trace histogram [1180, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:37:44,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:37:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:37:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1128482547, now seen corresponding path program 1 times [2022-11-23 15:37:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:37:44,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105086653] [2022-11-23 15:37:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:37:44,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms