./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS --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 37cca93bb7dc8cf168b28f2ca23bfa0068547531ceecfc239eae366d82d628a0 --- 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-8393723 [2022-11-19 07:54:46,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:54:47,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:54:47,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:54:47,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:54:47,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:54:47,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:54:47,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:54:47,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:54:47,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:54:47,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:54:47,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:54:47,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:54:47,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:54:47,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:54:47,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:54:47,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:54:47,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:54:47,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:54:47,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:54:47,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:54:47,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:54:47,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:54:47,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:54:47,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:54:47,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:54:47,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:54:47,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:54:47,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:54:47,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:54:47,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:54:47,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:54:47,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:54:47,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:54:47,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:54:47,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:54:47,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:54:47,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:54:47,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:54:47,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:54:47,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:54:47,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:54:47,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:54:47,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:54:47,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:54:47,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:54:47,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:54:47,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:54:47,129 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:54:47,129 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:54:47,130 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:54:47,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:54:47,130 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:54:47,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:54:47,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:54:47,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:54:47,131 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:54:47,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:54:47,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:54:47,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:54:47,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:54:47,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:54:47,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:54:47,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:54:47,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:54:47,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:54:47,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:54:47,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:54:47,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:54:47,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:54:47,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:54:47,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:54:47,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:54:47,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:54:47,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:47,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:54:47,136 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:54:47,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:54:47,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:54:47,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:54:47,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:54:47,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:54:47,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:54:47,138 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_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37cca93bb7dc8cf168b28f2ca23bfa0068547531ceecfc239eae366d82d628a0 [2022-11-19 07:54:47,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:54:47,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:54:47,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:54:47,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:54:47,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:54:47,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/xcsp/Haystacks-07.c [2022-11-19 07:54:47,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/data/ce7e7b23e/00c8985ece284e83b5a918215418b372/FLAG00f4d8572 [2022-11-19 07:54:47,981 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:54:47,981 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/sv-benchmarks/c/xcsp/Haystacks-07.c [2022-11-19 07:54:47,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/data/ce7e7b23e/00c8985ece284e83b5a918215418b372/FLAG00f4d8572 [2022-11-19 07:54:48,304 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/data/ce7e7b23e/00c8985ece284e83b5a918215418b372 [2022-11-19 07:54:48,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:54:48,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:54:48,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:48,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:54:48,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:54:48,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7049e7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48, skipping insertion in model container [2022-11-19 07:54:48,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:54:48,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:54:48,611 WARN L234 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_863022dc-0197-4824-b1ee-7ae710da9ac2/sv-benchmarks/c/xcsp/Haystacks-07.c[11507,11520] [2022-11-19 07:54:48,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:48,628 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:54:48,724 WARN L234 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_863022dc-0197-4824-b1ee-7ae710da9ac2/sv-benchmarks/c/xcsp/Haystacks-07.c[11507,11520] [2022-11-19 07:54:48,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:48,753 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:54:48,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48 WrapperNode [2022-11-19 07:54:48,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:48,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:48,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:54:48,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:54:48,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,851 INFO L138 Inliner]: procedures = 13, calls = 294, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 500 [2022-11-19 07:54:48,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:48,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:54:48,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:54:48,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:54:48,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:54:48,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:54:48,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:54:48,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:54:48,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (1/1) ... [2022-11-19 07:54:48,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:48,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:54:48,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:54:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:54:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:54:49,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:54:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:54:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2022-11-19 07:54:49,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2022-11-19 07:54:49,110 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:54:49,113 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:54:49,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:54:49,991 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:54:49,991 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:54:49,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:49 BoogieIcfgContainer [2022-11-19 07:54:49,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:54:49,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:54:49,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:54:50,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:54:50,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:48" (1/3) ... [2022-11-19 07:54:50,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1296ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:50, skipping insertion in model container [2022-11-19 07:54:50,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:48" (2/3) ... [2022-11-19 07:54:50,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1296ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:50, skipping insertion in model container [2022-11-19 07:54:50,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:49" (3/3) ... [2022-11-19 07:54:50,005 INFO L112 eAbstractionObserver]: Analyzing ICFG Haystacks-07.c [2022-11-19 07:54:50,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:54:50,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:54:50,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:54:50,095 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;@46ce0685, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:54:50,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:54:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 287 states have call successors, (287), 1 states have call predecessors, (287), 1 states have return successors, (287), 287 states have call predecessors, (287), 287 states have call successors, (287) [2022-11-19 07:54:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2022-11-19 07:54:50,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:50,164 INFO L195 NwaCegarLoop]: trace histogram [287, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:50,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash -475713343, now seen corresponding path program 1 times [2022-11-19 07:54:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:50,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037514198] [2022-11-19 07:54:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:50,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:50,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:50,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854243907] [2022-11-19 07:54:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:50,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:50,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:50,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:50,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_863022dc-0197-4824-b1ee-7ae710da9ac2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:08:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:58,679 WARN L261 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 1303 conjunts are in the unsatisfiable core [2022-11-19 08:08:58,785 INFO L286 TraceCheckSpWp]: Computing forward predicates...