./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem09_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem09_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh --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 72f7bbe26e999aa6fc862b70c94a22decf0c1308667d8d82ec3946437822092d --- 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-2329fc7 [2022-12-14 04:43:51,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:43:51,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:43:51,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:43:51,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:43:51,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:43:51,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:43:51,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:43:51,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:43:51,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:43:51,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:43:51,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:43:51,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:43:51,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:43:51,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:43:51,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:43:51,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:43:51,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:43:51,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:43:51,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:43:51,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:43:51,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:43:51,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:43:51,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:43:51,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:43:51,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:43:51,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:43:51,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:43:51,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:43:51,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:43:51,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:43:51,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:43:51,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:43:51,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:43:51,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:43:51,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:43:51,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:43:51,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:43:51,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:43:51,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:43:51,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:43:51,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:43:51,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:43:51,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:43:51,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:43:51,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:43:51,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:43:51,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:43:51,831 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:43:51,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:43:51,832 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:43:51,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:43:51,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:43:51,833 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:43:51,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:43:51,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:43:51,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:43:51,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:43:51,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:43:51,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:43:51,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:43:51,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:43:51,835 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:43:51,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:43:51,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:43:51,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:43:51,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:43:51,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:43:51,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:43:51,836 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_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72f7bbe26e999aa6fc862b70c94a22decf0c1308667d8d82ec3946437822092d [2022-12-14 04:43:51,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:43:52,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:43:52,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:43:52,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:43:52,016 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:43:52,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem09_label37.c [2022-12-14 04:43:54,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:43:56,618 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:43:56,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/sv-benchmarks/c/eca-rers2012/Problem09_label37.c [2022-12-14 04:43:56,983 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/data/61145cecd/8bd18c5be371468fb92f7e122b864aaa/FLAG04f6883e1 [2022-12-14 04:43:56,996 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/data/61145cecd/8bd18c5be371468fb92f7e122b864aaa [2022-12-14 04:43:56,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:43:57,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:43:57,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:43:57,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:43:57,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:43:57,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:43:56" (1/1) ... [2022-12-14 04:43:57,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e3737d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:43:57, skipping insertion in model container [2022-12-14 04:43:57,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:43:56" (1/1) ... [2022-12-14 04:43:57,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:43:58,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:44:23,164 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/sv-benchmarks/c/eca-rers2012/Problem09_label37.c[6304596,6304609] [2022-12-14 04:44:23,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:23,282 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:44:36,223 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/sv-benchmarks/c/eca-rers2012/Problem09_label37.c[6304596,6304609] [2022-12-14 04:44:36,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:39,334 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:44:39,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39 WrapperNode [2022-12-14 04:44:39,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:39,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:39,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:44:39,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:44:39,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:39,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:42,752 INFO L138 Inliner]: procedures = 88, calls = 82, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 197818 [2022-12-14 04:44:42,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:42,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:44:42,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:44:42,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:44:42,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:42,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:43,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:43,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:44,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:44,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:44,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:44,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:45,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:44:45,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:44:45,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:44:45,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:44:45,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (1/1) ... [2022-12-14 04:44:45,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:45,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:45,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:44:45,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c78218-20f6-4a57-a2d4-e7ea7c5c007a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:44:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:44:45,686 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:44:45,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:45:54,457 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:46:45,632 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:46:45,632 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:46:45,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:46:45 BoogieIcfgContainer [2022-12-14 04:46:45,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:46:45,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:46:45,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:46:45,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:46:45,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:43:56" (1/3) ... [2022-12-14 04:46:45,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c0e992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:46:45, skipping insertion in model container [2022-12-14 04:46:45,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:39" (2/3) ... [2022-12-14 04:46:45,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c0e992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:46:45, skipping insertion in model container [2022-12-14 04:46:45,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:46:45" (3/3) ... [2022-12-14 04:46:45,651 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem09_label37.c [2022-12-14 04:46:45,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:46:45,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:46:45,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:46:45,859 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;@24745ff3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:46:45,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:46:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 16544 states, 16542 states have (on average 1.995284729778745) internal successors, (33006), 16543 states have internal predecessors, (33006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16466 [2022-12-14 04:46:47,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:47,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:47,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:46:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1181204179, now seen corresponding path program 1 times [2022-12-14 04:46:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647699251] [2022-12-14 04:46:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:48:05,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:05,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647699251] [2022-12-14 04:48:05,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647699251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:05,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:05,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:48:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818396117] [2022-12-14 04:48:05,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:05,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:05,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:06,015 INFO L87 Difference]: Start difference. First operand has 16544 states, 16542 states have (on average 1.995284729778745) internal successors, (33006), 16543 states have internal predecessors, (33006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5488.333333333333) internal successors, (16465), 2 states have internal predecessors, (16465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:49:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:03,820 INFO L93 Difference]: Finished difference Result 49628 states and 99014 transitions. [2022-12-14 04:49:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5488.333333333333) internal successors, (16465), 2 states have internal predecessors, (16465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16465 [2022-12-14 04:49:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:03,927 INFO L225 Difference]: With dead ends: 49628 [2022-12-14 04:49:03,927 INFO L226 Difference]: Without dead ends: 33081 [2022-12-14 04:49:03,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:03,945 INFO L413 NwaCegarLoop]: 4008 mSDtfsCounter, 3992 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 48960 mSolverCounterSat, 22041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 71001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 22041 IncrementalHoareTripleChecker+Valid, 48960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:03,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3992 Valid, 4379 Invalid, 71001 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [22041 Valid, 48960 Invalid, 0 Unknown, 0 Unchecked, 56.8s Time] [2022-12-14 04:49:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33081 states. [2022-12-14 04:49:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33081 to 33081. [2022-12-14 04:49:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33081 states, 33080 states have (on average 1.8547158403869408) internal successors, (61354), 33080 states have internal predecessors, (61354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:49:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33081 states to 33081 states and 61354 transitions. [2022-12-14 04:49:04,533 INFO L78 Accepts]: Start accepts. Automaton has 33081 states and 61354 transitions. Word has length 16465 [2022-12-14 04:49:04,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:04,551 INFO L495 AbstractCegarLoop]: Abstraction has 33081 states and 61354 transitions. [2022-12-14 04:49:04,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5488.333333333333) internal successors, (16465), 2 states have internal predecessors, (16465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:49:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 33081 states and 61354 transitions. [2022-12-14 04:49:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16475 [2022-12-14 04:49:06,066 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:06,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:06,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:49:06,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash 284975412, now seen corresponding path program 1 times [2022-12-14 04:49:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:06,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893292284] [2022-12-14 04:49:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:50:25,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:50:25,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893292284] [2022-12-14 04:50:25,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893292284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:50:25,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:50:25,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:50:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088016975] [2022-12-14 04:50:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:50:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:50:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:50:25,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:50:25,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:50:25,157 INFO L87 Difference]: Start difference. First operand 33081 states and 61354 transitions. Second operand has 3 states, 3 states have (on average 5491.333333333333) internal successors, (16474), 2 states have internal predecessors, (16474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:51:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:51:23,752 INFO L93 Difference]: Finished difference Result 99239 states and 184059 transitions. [2022-12-14 04:51:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:51:23,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5491.333333333333) internal successors, (16474), 2 states have internal predecessors, (16474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16474 [2022-12-14 04:51:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:51:23,888 INFO L225 Difference]: With dead ends: 99239 [2022-12-14 04:51:23,889 INFO L226 Difference]: Without dead ends: 66159 [2022-12-14 04:51:23,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:51:23,940 INFO L413 NwaCegarLoop]: 10844 mSDtfsCounter, 17328 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 54301 mSolverCounterSat, 13113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17328 SdHoareTripleChecker+Valid, 11214 SdHoareTripleChecker+Invalid, 67414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13113 IncrementalHoareTripleChecker+Valid, 54301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:51:23,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17328 Valid, 11214 Invalid, 67414 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13113 Valid, 54301 Invalid, 0 Unknown, 0 Unchecked, 57.5s Time] [2022-12-14 04:51:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66159 states. [2022-12-14 04:51:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66159 to 66159. [2022-12-14 04:51:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66159 states, 66158 states have (on average 1.5804286707578827) internal successors, (104558), 66158 states have internal predecessors, (104558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:51:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66159 states to 66159 states and 104558 transitions. [2022-12-14 04:51:24,886 INFO L78 Accepts]: Start accepts. Automaton has 66159 states and 104558 transitions. Word has length 16474 [2022-12-14 04:51:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:51:24,888 INFO L495 AbstractCegarLoop]: Abstraction has 66159 states and 104558 transitions. [2022-12-14 04:51:24,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5491.333333333333) internal successors, (16474), 2 states have internal predecessors, (16474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:51:24,891 INFO L276 IsEmpty]: Start isEmpty. Operand 66159 states and 104558 transitions. [2022-12-14 04:51:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16479 [2022-12-14 04:51:26,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:26,550 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:26,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:51:26,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:51:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash 473426019, now seen corresponding path program 1 times [2022-12-14 04:51:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:51:26,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568524314] [2022-12-14 04:51:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:51:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:52:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 04:52:34,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:52:34,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568524314] [2022-12-14 04:52:34,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568524314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:52:34,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:52:34,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:52:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191697579] [2022-12-14 04:52:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:52:34,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:52:34,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:52:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:52:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:52:34,527 INFO L87 Difference]: Start difference. First operand 66159 states and 104558 transitions. Second operand has 3 states, 3 states have (on average 5490.0) internal successors, (16470), 2 states have internal predecessors, (16470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:53:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:53:34,216 INFO L93 Difference]: Finished difference Result 198473 states and 313671 transitions. [2022-12-14 04:53:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:53:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5490.0) internal successors, (16470), 2 states have internal predecessors, (16470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16478 [2022-12-14 04:53:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:53:34,354 INFO L225 Difference]: With dead ends: 198473 [2022-12-14 04:53:34,354 INFO L226 Difference]: Without dead ends: 132315 [2022-12-14 04:53:34,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:53:34,377 INFO L413 NwaCegarLoop]: 11744 mSDtfsCounter, 18117 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 46781 mSolverCounterSat, 21343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18117 SdHoareTripleChecker+Valid, 12113 SdHoareTripleChecker+Invalid, 68124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21343 IncrementalHoareTripleChecker+Valid, 46781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:53:34,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18117 Valid, 12113 Invalid, 68124 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21343 Valid, 46781 Invalid, 0 Unknown, 0 Unchecked, 58.5s Time] [2022-12-14 04:53:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132315 states.