./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI --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 6b537bfce1176c41c6bc215444effcd63b1e343cf1b15ee69a282ebedb146c69 --- 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 [2022-11-03 04:06:23,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:23,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:23,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:23,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:23,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:23,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:23,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:23,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:23,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:23,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:23,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:23,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:23,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:23,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:23,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:23,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:23,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:23,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:23,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:23,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:23,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:23,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:23,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:23,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:24,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:24,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:24,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:24,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:24,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:24,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:24,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:24,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:24,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:24,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:24,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:24,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:24,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:24,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:24,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:24,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:24,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:06:24,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:24,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:24,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:24,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:24,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:24,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:24,058 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:24,058 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:24,059 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:24,059 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:24,059 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:24,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:24,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:24,060 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:24,060 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:24,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:24,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:24,061 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:24,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:24,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:24,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:24,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:24,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:24,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:24,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:24,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:24,063 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:24,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:24,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:24,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:24,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:24,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:24,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:24,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:24,065 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:24,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:24,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:24,066 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:24,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:24,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:24,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:24,081 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_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b537bfce1176c41c6bc215444effcd63b1e343cf1b15ee69a282ebedb146c69 [2022-11-03 04:06:24,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:24,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:24,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:24,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:24,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:24,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2022-11-03 04:06:24,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/data/edae5ed9a/52aa146017cc4bf2a975c07c4e2c2f9e/FLAG15d10b49f [2022-11-03 04:06:24,978 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:24,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2022-11-03 04:06:24,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/data/edae5ed9a/52aa146017cc4bf2a975c07c4e2c2f9e/FLAG15d10b49f [2022-11-03 04:06:25,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/data/edae5ed9a/52aa146017cc4bf2a975c07c4e2c2f9e [2022-11-03 04:06:25,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:25,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:25,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:25,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:25,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:25,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b3c560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25, skipping insertion in model container [2022-11-03 04:06:25,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:25,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:25,613 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_81d44ebc-aa8a-4831-b1ad-281c2341edc1/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c[588,601] [2022-11-03 04:06:25,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:25,646 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:25,657 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_81d44ebc-aa8a-4831-b1ad-281c2341edc1/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c[588,601] [2022-11-03 04:06:25,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:25,683 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:25,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25 WrapperNode [2022-11-03 04:06:25,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:25,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:25,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:25,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:25,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,717 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2022-11-03 04:06:25,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:25,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:25,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:25,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:25,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:25,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:25,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:25,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:25,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (1/1) ... [2022-11-03 04:06:25,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:25,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:25,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:25,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:06:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:06:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 04:06:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 04:06:25,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:25,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:06:26,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:06:26,284 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:06:26,285 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:06:26,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:26 BoogieIcfgContainer [2022-11-03 04:06:26,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:06:26,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:06:26,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:06:26,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:06:26,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:25" (1/3) ... [2022-11-03 04:06:26,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2988c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:26, skipping insertion in model container [2022-11-03 04:06:26,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:25" (2/3) ... [2022-11-03 04:06:26,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2988c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:26, skipping insertion in model container [2022-11-03 04:06:26,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:26" (3/3) ... [2022-11-03 04:06:26,317 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2022-11-03 04:06:26,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:06:26,337 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:06:26,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:06:26,398 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;@14be6397, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:06:26,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:06:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 04:06:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:06:26,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:26,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:06:26,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1408153759, now seen corresponding path program 1 times [2022-11-03 04:06:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:26,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708283551] [2022-11-03 04:06:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:26,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:26,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708283551] [2022-11-03 04:06:26,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708283551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:26,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:26,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:06:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691146321] [2022-11-03 04:06:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:06:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:06:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:06:26,636 INFO L87 Difference]: Start difference. First operand has 23 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:26,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:26,672 INFO L93 Difference]: Finished difference Result 45 states and 82 transitions. [2022-11-03 04:06:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:06:26,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 04:06:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:26,682 INFO L225 Difference]: With dead ends: 45 [2022-11-03 04:06:26,683 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 04:06:26,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:06:26,690 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:26,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:06:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 04:06:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-03 04:06:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 04:06:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2022-11-03 04:06:26,736 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 6 [2022-11-03 04:06:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:26,737 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2022-11-03 04:06:26,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2022-11-03 04:06:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:06:26,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:26,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:26,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:06:26,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1232571916, now seen corresponding path program 1 times [2022-11-03 04:06:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97828869] [2022-11-03 04:06:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:26,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:26,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:26,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97828869] [2022-11-03 04:06:26,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97828869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:26,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:26,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:26,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767440549] [2022-11-03 04:06:26,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:26,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:06:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:06:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:06:26,890 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:26,924 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2022-11-03 04:06:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:06:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:06:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:26,930 INFO L225 Difference]: With dead ends: 35 [2022-11-03 04:06:26,930 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 04:06:26,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:06:26,932 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:26,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:06:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 04:06:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-03 04:06:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 04:06:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-11-03 04:06:26,942 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 7 [2022-11-03 04:06:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:26,943 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-03 04:06:26,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2022-11-03 04:06:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:06:26,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:26,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:26,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:06:26,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1231022784, now seen corresponding path program 1 times [2022-11-03 04:06:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:26,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947840066] [2022-11-03 04:06:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:27,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947840066] [2022-11-03 04:06:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947840066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:27,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:27,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:06:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143592441] [2022-11-03 04:06:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:27,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:27,299 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:27,448 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-11-03 04:06:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:06:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:06:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:27,451 INFO L225 Difference]: With dead ends: 29 [2022-11-03 04:06:27,451 INFO L226 Difference]: Without dead ends: 27 [2022-11-03 04:06:27,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:06:27,459 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:27,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 55 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-03 04:06:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-03 04:06:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 04:06:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-03 04:06:27,485 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 7 [2022-11-03 04:06:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:27,485 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-03 04:06:27,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:27,486 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-03 04:06:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 04:06:27,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:27,487 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:27,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:06:27,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1004679035, now seen corresponding path program 1 times [2022-11-03 04:06:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:27,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297960535] [2022-11-03 04:06:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:27,519 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:06:27,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756872603] [2022-11-03 04:06:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:27,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:27,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:27,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:06:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:27,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:06:27,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:27,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:06:27,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:27,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297960535] [2022-11-03 04:06:27,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:06:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756872603] [2022-11-03 04:06:27,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756872603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:27,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:27,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714247558] [2022-11-03 04:06:27,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:27,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:27,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:27,771 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 04:06:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:27,929 INFO L93 Difference]: Finished difference Result 45 states and 65 transitions. [2022-11-03 04:06:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:06:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-03 04:06:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:27,931 INFO L225 Difference]: With dead ends: 45 [2022-11-03 04:06:27,931 INFO L226 Difference]: Without dead ends: 43 [2022-11-03 04:06:27,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:06:27,933 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:27,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-03 04:06:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-11-03 04:06:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:06:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2022-11-03 04:06:27,951 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 12 [2022-11-03 04:06:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:27,952 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2022-11-03 04:06:27,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 04:06:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2022-11-03 04:06:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 04:06:27,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:27,953 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:27,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:28,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-03 04:06:28,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash 752381984, now seen corresponding path program 1 times [2022-11-03 04:06:28,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:28,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8192541] [2022-11-03 04:06:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:28,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:06:28,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97234023] [2022-11-03 04:06:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:28,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:28,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:28,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:06:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:28,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:06:28,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 04:06:28,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:06:28,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8192541] [2022-11-03 04:06:28,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:06:28,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97234023] [2022-11-03 04:06:28,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97234023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:28,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:28,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877623088] [2022-11-03 04:06:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:28,418 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 04:06:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:28,551 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2022-11-03 04:06:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:06:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-11-03 04:06:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:28,556 INFO L225 Difference]: With dead ends: 49 [2022-11-03 04:06:28,556 INFO L226 Difference]: Without dead ends: 47 [2022-11-03 04:06:28,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:06:28,563 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:28,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 120 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-03 04:06:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2022-11-03 04:06:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-03 04:06:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2022-11-03 04:06:28,600 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 17 [2022-11-03 04:06:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:28,600 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2022-11-03 04:06:28,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 04:06:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2022-11-03 04:06:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 04:06:28,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:28,603 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:28,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 04:06:28,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:28,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2088406747, now seen corresponding path program 1 times [2022-11-03 04:06:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974369266] [2022-11-03 04:06:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:28,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:06:28,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496029976] [2022-11-03 04:06:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:28,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:28,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:06:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:28,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:06:28,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:06:29,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:06:29,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:29,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974369266] [2022-11-03 04:06:29,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:06:29,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496029976] [2022-11-03 04:06:29,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496029976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:29,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:29,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:06:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825287917] [2022-11-03 04:06:29,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:29,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:29,043 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:06:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:29,197 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-11-03 04:06:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:06:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-11-03 04:06:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:29,199 INFO L225 Difference]: With dead ends: 57 [2022-11-03 04:06:29,199 INFO L226 Difference]: Without dead ends: 45 [2022-11-03 04:06:29,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:06:29,201 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:29,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-03 04:06:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-03 04:06:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 04:06:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-03 04:06:29,215 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2022-11-03 04:06:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:29,216 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-03 04:06:29,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:06:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-11-03 04:06:29,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 04:06:29,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:29,217 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:29,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:29,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:29,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 204620983, now seen corresponding path program 1 times [2022-11-03 04:06:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645294762] [2022-11-03 04:06:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:29,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:06:29,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359051454] [2022-11-03 04:06:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:29,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:29,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:06:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:29,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:06:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:29,593 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:06:29,593 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:06:29,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:06:29,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:29,800 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:29,804 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:06:29,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:06:29 BoogieIcfgContainer [2022-11-03 04:06:29,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:06:29,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:06:29,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:06:29,849 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:06:29,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:26" (3/4) ... [2022-11-03 04:06:29,851 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 04:06:29,898 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:06:29,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:06:29,899 INFO L158 Benchmark]: Toolchain (without parser) took 4535.89ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 61.4MB in the beginning and 53.1MB in the end (delta: 8.4MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-03 04:06:29,900 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 102.8MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:29,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.34ms. Allocated memory is still 102.8MB. Free memory was 61.3MB in the beginning and 77.9MB in the end (delta: -16.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 04:06:29,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.99ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 76.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:29,901 INFO L158 Benchmark]: Boogie Preprocessor took 24.41ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 75.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:29,901 INFO L158 Benchmark]: RCFGBuilder took 544.08ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 62.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 04:06:29,902 INFO L158 Benchmark]: TraceAbstraction took 3543.23ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 62.5MB in the beginning and 55.2MB in the end (delta: 7.3MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:29,902 INFO L158 Benchmark]: Witness Printer took 50.32ms. Allocated memory is still 123.7MB. Free memory was 55.2MB in the beginning and 53.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:29,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 102.8MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.34ms. Allocated memory is still 102.8MB. Free memory was 61.3MB in the beginning and 77.9MB in the end (delta: -16.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.99ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 76.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.41ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 75.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.08ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 62.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3543.23ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 62.5MB in the beginning and 55.2MB in the end (delta: 7.3MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Witness Printer took 50.32ms. Allocated memory is still 123.7MB. Free memory was 55.2MB in the beginning and 53.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [a=1, counter=0, n=0, x=0, y=1, z=6] [L33] EXPR counter++ VAL [a=1, counter=1, counter++=0, n=0, x=0, y=1, z=6] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(z == 6 * n + 6) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L36] CALL __VERIFIER_assert(x == n * n * n) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(x == n * n * n) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) VAL [a=1, counter=1, n=0, x=0, y=1, z=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [a=1, counter=1, n=1, x=1, y=7, z=12] [L33] EXPR counter++ VAL [a=1, counter=2, counter++=1, n=1, x=1, y=7, z=12] [L33] COND FALSE !(counter++<1) [L48] CALL __VERIFIER_assert(z == 6*n + 6) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L48] RET __VERIFIER_assert(z == 6*n + 6) VAL [a=1, counter=2, n=1, x=1, y=7, z=12] [L49] CALL __VERIFIER_assert(6*a*x - x*z + 12*x == 0) VAL [\old(cond)=0, counter=2] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L17] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 510 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 207 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 3 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 04:06:29,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d44ebc-aa8a-4831-b1ad-281c2341edc1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE