./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91ebea43abc6271e81b3eed447826b716b76bbe82349fcd855bbd6d5636a25a9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:37:48,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:37:48,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:37:49,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:37:49,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:37:49,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:37:49,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:37:49,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:37:49,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:37:49,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:37:49,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:37:49,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:37:49,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:37:49,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:37:49,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:37:49,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:37:49,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:37:49,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:37:49,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:37:49,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:37:49,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:37:49,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:37:49,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:37:49,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:37:49,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:37:49,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:37:49,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:37:49,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:37:49,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:37:49,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:37:49,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:37:49,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:37:49,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:37:49,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:37:49,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:37:49,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:37:49,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:37:49,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:37:49,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:37:49,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:37:49,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:37:49,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:37:49,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:37:49,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:37:49,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:37:49,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:37:49,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:37:49,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:37:49,077 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:37:49,077 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:37:49,078 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:37:49,078 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:37:49,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:37:49,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:37:49,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:37:49,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:37:49,079 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:37:49,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:37:49,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:37:49,080 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:37:49,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:37:49,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:37:49,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:37:49,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:37:49,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:37:49,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:37:49,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:37:49,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:37:49,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:37:49,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:37:49,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:37:49,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:37:49,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:37:49,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:37:49,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:49,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:37:49,085 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:37:49,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:37:49,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:37:49,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:37:49,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:37:49,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:37:49,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:37:49,087 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_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91ebea43abc6271e81b3eed447826b716b76bbe82349fcd855bbd6d5636a25a9 [2022-11-19 06:37:49,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:37:49,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:37:49,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:37:49,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:37:49,358 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:37:49,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2022-11-19 06:37:49,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/data/b47f1e5db/68be19327ce44d8fb6c85c647934a688/FLAG3b7a36b3b [2022-11-19 06:37:50,124 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:37:50,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2022-11-19 06:37:50,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/data/b47f1e5db/68be19327ce44d8fb6c85c647934a688/FLAG3b7a36b3b [2022-11-19 06:37:50,355 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/data/b47f1e5db/68be19327ce44d8fb6c85c647934a688 [2022-11-19 06:37:50,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:37:50,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:37:50,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:50,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:37:50,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:37:50,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:50" (1/1) ... [2022-11-19 06:37:50,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65405adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:50, skipping insertion in model container [2022-11-19 06:37:50,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:50" (1/1) ... [2022-11-19 06:37:50,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:37:50,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:37:50,820 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2022-11-19 06:37:50,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:50,906 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:37:50,995 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2022-11-19 06:37:51,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:37:51,028 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:37:51,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51 WrapperNode [2022-11-19 06:37:51,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:37:51,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:51,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:37:51,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:37:51,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,112 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-19 06:37:51,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:37:51,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:37:51,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:37:51,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:37:51,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:37:51,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:37:51,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:37:51,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:37:51,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (1/1) ... [2022-11-19 06:37:51,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:37:51,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:51,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:37:51,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:37:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:37:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:37:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:37:51,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:37:51,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:37:51,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:37:52,637 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:37:52,917 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:37:52,917 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:37:52,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:52 BoogieIcfgContainer [2022-11-19 06:37:52,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:37:52,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:37:52,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:37:52,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:37:52,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:37:50" (1/3) ... [2022-11-19 06:37:52,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219a15e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:52, skipping insertion in model container [2022-11-19 06:37:52,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:51" (2/3) ... [2022-11-19 06:37:52,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219a15e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:52, skipping insertion in model container [2022-11-19 06:37:52,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:52" (3/3) ... [2022-11-19 06:37:52,933 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2022-11-19 06:37:52,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:37:52,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:37:53,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:37:53,014 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;@7402e850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:37:53,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:37:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2022-11-19 06:37:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 06:37:53,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:53,029 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] [2022-11-19 06:37:53,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:53,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash 379009470, now seen corresponding path program 1 times [2022-11-19 06:37:53,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:53,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921593623] [2022-11-19 06:37:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:53,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:53,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921593623] [2022-11-19 06:37:53,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921593623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:53,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:53,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:37:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011587967] [2022-11-19 06:37:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:53,677 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-11-19 06:37:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:54,187 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-19 06:37:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2022-11-19 06:37:54,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:54,208 INFO L225 Difference]: With dead ends: 224 [2022-11-19 06:37:54,208 INFO L226 Difference]: Without dead ends: 145 [2022-11-19 06:37:54,212 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 [2022-11-19 06:37:54,216 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-19 06:37:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-19 06:37:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 144 states have internal predecessors, (265), 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) [2022-11-19 06:37:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2022-11-19 06:37:54,268 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2022-11-19 06:37:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:54,269 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2022-11-19 06:37:54,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-11-19 06:37:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2022-11-19 06:37:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 06:37:54,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:54,272 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 06:37:54,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:37:54,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -615352239, now seen corresponding path program 1 times [2022-11-19 06:37:54,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:54,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162810768] [2022-11-19 06:37:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:54,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:54,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162810768] [2022-11-19 06:37:54,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162810768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:54,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:54,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:37:54,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863426333] [2022-11-19 06:37:54,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:54,397 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-11-19 06:37:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:54,852 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2022-11-19 06:37:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:54,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-11-19 06:37:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:54,859 INFO L225 Difference]: With dead ends: 431 [2022-11-19 06:37:54,859 INFO L226 Difference]: Without dead ends: 287 [2022-11-19 06:37:54,864 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 [2022-11-19 06:37:54,867 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:54,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-19 06:37:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-19 06:37:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6958041958041958) internal successors, (485), 286 states have internal predecessors, (485), 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) [2022-11-19 06:37:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 485 transitions. [2022-11-19 06:37:54,903 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 485 transitions. Word has length 77 [2022-11-19 06:37:54,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:54,904 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 485 transitions. [2022-11-19 06:37:54,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-11-19 06:37:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 485 transitions. [2022-11-19 06:37:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 06:37:54,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:54,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 06:37:54,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:37:54,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1344575438, now seen corresponding path program 1 times [2022-11-19 06:37:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:54,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693752433] [2022-11-19 06:37:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:54,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:55,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:55,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693752433] [2022-11-19 06:37:55,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693752433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:55,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:55,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:37:55,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017461761] [2022-11-19 06:37:55,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:55,166 INFO L87 Difference]: Start difference. First operand 287 states and 485 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-11-19 06:37:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:55,584 INFO L93 Difference]: Finished difference Result 857 states and 1452 transitions. [2022-11-19 06:37:55,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:55,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2022-11-19 06:37:55,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:55,588 INFO L225 Difference]: With dead ends: 857 [2022-11-19 06:37:55,588 INFO L226 Difference]: Without dead ends: 571 [2022-11-19 06:37:55,590 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 [2022-11-19 06:37:55,594 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:55,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 33 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-19 06:37:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-11-19 06:37:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5701754385964912) internal successors, (895), 570 states have internal predecessors, (895), 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) [2022-11-19 06:37:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 895 transitions. [2022-11-19 06:37:55,647 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 895 transitions. Word has length 92 [2022-11-19 06:37:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:55,649 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 895 transitions. [2022-11-19 06:37:55,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-11-19 06:37:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 895 transitions. [2022-11-19 06:37:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 06:37:55,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:55,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 06:37:55,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:37:55,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1933841620, now seen corresponding path program 1 times [2022-11-19 06:37:55,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:55,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104830931] [2022-11-19 06:37:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:37:55,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:55,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104830931] [2022-11-19 06:37:55,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104830931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:55,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:55,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:37:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291529129] [2022-11-19 06:37:55,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:55,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:55,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:55,843 INFO L87 Difference]: Start difference. First operand 571 states and 895 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-11-19 06:37:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:56,257 INFO L93 Difference]: Finished difference Result 1354 states and 2147 transitions. [2022-11-19 06:37:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:56,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 105 [2022-11-19 06:37:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:56,262 INFO L225 Difference]: With dead ends: 1354 [2022-11-19 06:37:56,262 INFO L226 Difference]: Without dead ends: 784 [2022-11-19 06:37:56,263 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 [2022-11-19 06:37:56,264 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:56,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-19 06:37:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2022-11-19 06:37:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5614035087719298) internal successors, (890), 570 states have internal predecessors, (890), 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) [2022-11-19 06:37:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 890 transitions. [2022-11-19 06:37:56,287 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 890 transitions. Word has length 105 [2022-11-19 06:37:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:56,287 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 890 transitions. [2022-11-19 06:37:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-11-19 06:37:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 890 transitions. [2022-11-19 06:37:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-19 06:37:56,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:56,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 06:37:56,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:37:56,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash 218729974, now seen corresponding path program 1 times [2022-11-19 06:37:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:56,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622056907] [2022-11-19 06:37:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 06:37:56,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:56,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622056907] [2022-11-19 06:37:56,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622056907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:56,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:56,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:37:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655455622] [2022-11-19 06:37:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:56,562 INFO L87 Difference]: Start difference. First operand 571 states and 890 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-19 06:37:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:56,958 INFO L93 Difference]: Finished difference Result 1425 states and 2189 transitions. [2022-11-19 06:37:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:56,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 109 [2022-11-19 06:37:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:56,963 INFO L225 Difference]: With dead ends: 1425 [2022-11-19 06:37:56,963 INFO L226 Difference]: Without dead ends: 855 [2022-11-19 06:37:56,964 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 [2022-11-19 06:37:56,965 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 77 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:56,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 50 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-19 06:37:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2022-11-19 06:37:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.5) internal successors, (1068), 712 states have internal predecessors, (1068), 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) [2022-11-19 06:37:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1068 transitions. [2022-11-19 06:37:56,988 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1068 transitions. Word has length 109 [2022-11-19 06:37:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:56,988 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1068 transitions. [2022-11-19 06:37:56,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-19 06:37:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1068 transitions. [2022-11-19 06:37:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 06:37:56,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:56,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 06:37:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:37:56,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -692397588, now seen corresponding path program 1 times [2022-11-19 06:37:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:56,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734935804] [2022-11-19 06:37:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:56,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-19 06:37:57,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:57,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734935804] [2022-11-19 06:37:57,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734935804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:57,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:57,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:37:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873879367] [2022-11-19 06:37:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:57,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:57,169 INFO L87 Difference]: Start difference. First operand 713 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-19 06:37:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:57,659 INFO L93 Difference]: Finished difference Result 1780 states and 2616 transitions. [2022-11-19 06:37:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:57,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 122 [2022-11-19 06:37:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:57,664 INFO L225 Difference]: With dead ends: 1780 [2022-11-19 06:37:57,665 INFO L226 Difference]: Without dead ends: 1068 [2022-11-19 06:37:57,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:57,667 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 81 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:57,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 19 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-19 06:37:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 855. [2022-11-19 06:37:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4519906323185012) internal successors, (1240), 854 states have internal predecessors, (1240), 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) [2022-11-19 06:37:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1240 transitions. [2022-11-19 06:37:57,696 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1240 transitions. Word has length 122 [2022-11-19 06:37:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:57,696 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1240 transitions. [2022-11-19 06:37:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-19 06:37:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1240 transitions. [2022-11-19 06:37:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 06:37:57,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:57,700 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-19 06:37:57,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:37:57,700 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2030922133, now seen corresponding path program 1 times [2022-11-19 06:37:57,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:57,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805653065] [2022-11-19 06:37:57,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-19 06:37:57,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:57,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805653065] [2022-11-19 06:37:57,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805653065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:57,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:57,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:37:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004390931] [2022-11-19 06:37:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:57,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:37:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:37:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:57,918 INFO L87 Difference]: Start difference. First operand 855 states and 1240 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2022-11-19 06:37:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:58,394 INFO L93 Difference]: Finished difference Result 1851 states and 2699 transitions. [2022-11-19 06:37:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:58,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 124 [2022-11-19 06:37:58,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:58,399 INFO L225 Difference]: With dead ends: 1851 [2022-11-19 06:37:58,400 INFO L226 Difference]: Without dead ends: 997 [2022-11-19 06:37:58,401 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 [2022-11-19 06:37:58,402 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:58,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 58 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:37:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-19 06:37:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-11-19 06:37:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.4367567567567567) internal successors, (1329), 925 states have internal predecessors, (1329), 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) [2022-11-19 06:37:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1329 transitions. [2022-11-19 06:37:58,429 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1329 transitions. Word has length 124 [2022-11-19 06:37:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:58,429 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1329 transitions. [2022-11-19 06:37:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2022-11-19 06:37:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1329 transitions. [2022-11-19 06:37:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-19 06:37:58,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:58,433 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 06:37:58,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:37:58,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1951034433, now seen corresponding path program 1 times [2022-11-19 06:37:58,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:58,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347494365] [2022-11-19 06:37:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 06:37:58,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:58,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347494365] [2022-11-19 06:37:58,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347494365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:58,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:58,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:37:58,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745957770] [2022-11-19 06:37:58,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:58,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:37:58,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:58,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:37:58,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:37:58,687 INFO L87 Difference]: Start difference. First operand 926 states and 1329 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2022-11-19 06:37:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:59,287 INFO L93 Difference]: Finished difference Result 2206 states and 3151 transitions. [2022-11-19 06:37:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:37:59,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 140 [2022-11-19 06:37:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:59,293 INFO L225 Difference]: With dead ends: 2206 [2022-11-19 06:37:59,293 INFO L226 Difference]: Without dead ends: 1281 [2022-11-19 06:37:59,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:37:59,295 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 202 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:59,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 30 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:37:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-11-19 06:37:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 997. [2022-11-19 06:37:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.4116465863453815) internal successors, (1406), 996 states have internal predecessors, (1406), 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) [2022-11-19 06:37:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1406 transitions. [2022-11-19 06:37:59,326 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1406 transitions. Word has length 140 [2022-11-19 06:37:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:59,327 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1406 transitions. [2022-11-19 06:37:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2022-11-19 06:37:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1406 transitions. [2022-11-19 06:37:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 06:37:59,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:59,330 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-11-19 06:37:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:37:59,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1229069980, now seen corresponding path program 1 times [2022-11-19 06:37:59,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:59,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558069659] [2022-11-19 06:37:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:59,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-19 06:37:59,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:59,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558069659] [2022-11-19 06:37:59,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558069659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:59,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:59,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:37:59,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090690109] [2022-11-19 06:37:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:59,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:37:59,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:37:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:37:59,719 INFO L87 Difference]: Start difference. First operand 997 states and 1406 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-11-19 06:38:00,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:00,317 INFO L93 Difference]: Finished difference Result 2206 states and 3072 transitions. [2022-11-19 06:38:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:38:00,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 154 [2022-11-19 06:38:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:00,323 INFO L225 Difference]: With dead ends: 2206 [2022-11-19 06:38:00,323 INFO L226 Difference]: Without dead ends: 1210 [2022-11-19 06:38:00,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:38:00,325 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:00,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 54 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:38:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-11-19 06:38:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2022-11-19 06:38:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.3655536028119508) internal successors, (1554), 1138 states have internal predecessors, (1554), 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) [2022-11-19 06:38:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1554 transitions. [2022-11-19 06:38:00,367 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1554 transitions. Word has length 154 [2022-11-19 06:38:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:00,368 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1554 transitions. [2022-11-19 06:38:00,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-11-19 06:38:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1554 transitions. [2022-11-19 06:38:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-19 06:38:00,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:00,373 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:38:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:38:00,374 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2145613825, now seen corresponding path program 1 times [2022-11-19 06:38:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:00,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915635670] [2022-11-19 06:38:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 06:38:00,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915635670] [2022-11-19 06:38:00,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915635670] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316451706] [2022-11-19 06:38:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:00,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:00,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:38:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:01,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:38:01,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 06:38:01,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:01,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316451706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:01,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:38:01,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 06:38:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239249426] [2022-11-19 06:38:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:01,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:38:01,339 INFO L87 Difference]: Start difference. First operand 1139 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-19 06:38:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:01,727 INFO L93 Difference]: Finished difference Result 1354 states and 1835 transitions. [2022-11-19 06:38:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 171 [2022-11-19 06:38:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:01,733 INFO L225 Difference]: With dead ends: 1354 [2022-11-19 06:38:01,733 INFO L226 Difference]: Without dead ends: 1352 [2022-11-19 06:38:01,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:38:01,734 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:01,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:38:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-11-19 06:38:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2022-11-19 06:38:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.3655536028119508) internal successors, (1554), 1138 states have internal predecessors, (1554), 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) [2022-11-19 06:38:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1554 transitions. [2022-11-19 06:38:01,765 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1554 transitions. Word has length 171 [2022-11-19 06:38:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:01,765 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1554 transitions. [2022-11-19 06:38:01,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-19 06:38:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1554 transitions. [2022-11-19 06:38:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-19 06:38:01,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:01,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-19 06:38:01,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:01,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1532612480, now seen corresponding path program 1 times [2022-11-19 06:38:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:01,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095380312] [2022-11-19 06:38:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:02,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095380312] [2022-11-19 06:38:02,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095380312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016624411] [2022-11-19 06:38:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:02,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:02,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:38:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:02,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:38:02,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-19 06:38:03,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:03,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016624411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:03,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:38:03,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-19 06:38:03,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901101827] [2022-11-19 06:38:03,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:03,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:38:03,050 INFO L87 Difference]: Start difference. First operand 1139 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2022-11-19 06:38:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:03,426 INFO L93 Difference]: Finished difference Result 2277 states and 3107 transitions. [2022-11-19 06:38:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:03,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 175 [2022-11-19 06:38:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:03,432 INFO L225 Difference]: With dead ends: 2277 [2022-11-19 06:38:03,432 INFO L226 Difference]: Without dead ends: 1139 [2022-11-19 06:38:03,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:38:03,437 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:03,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 108 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:38:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-19 06:38:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2022-11-19 06:38:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2720883534136547) internal successors, (1267), 996 states have internal predecessors, (1267), 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) [2022-11-19 06:38:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1267 transitions. [2022-11-19 06:38:03,470 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1267 transitions. Word has length 175 [2022-11-19 06:38:03,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:03,472 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1267 transitions. [2022-11-19 06:38:03,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2022-11-19 06:38:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1267 transitions. [2022-11-19 06:38:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-19 06:38:03,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:03,501 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:38:03,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:03,717 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -937112400, now seen corresponding path program 1 times [2022-11-19 06:38:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:03,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774058479] [2022-11-19 06:38:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:03,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 125 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-19 06:38:04,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:04,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774058479] [2022-11-19 06:38:04,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774058479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:04,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920795324] [2022-11-19 06:38:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:04,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:04,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:04,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:38:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:04,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:38:04,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-19 06:38:04,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:04,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920795324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:04,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:38:04,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 06:38:04,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867404805] [2022-11-19 06:38:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:04,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:04,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:04,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:04,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:38:04,512 INFO L87 Difference]: Start difference. First operand 997 states and 1267 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-19 06:38:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:04,905 INFO L93 Difference]: Finished difference Result 1991 states and 2532 transitions. [2022-11-19 06:38:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 177 [2022-11-19 06:38:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:04,907 INFO L225 Difference]: With dead ends: 1991 [2022-11-19 06:38:04,907 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:38:04,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:38:04,911 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:04,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:38:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:38:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:38:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-19 06:38:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:38:04,913 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2022-11-19 06:38:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:04,913 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:38:04,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-19 06:38:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:38:04,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:38:04,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:38:04,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:05,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:05,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:38:06,017 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-19 06:38:06,017 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-19 06:38:06,017 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-19 06:38:06,017 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-19 06:38:06,017 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-19 06:38:06,017 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-19 06:38:06,018 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-19 06:38:06,019 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-19 06:38:06,019 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-19 06:38:06,019 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-19 06:38:06,019 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-19 06:38:06,019 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-19 06:38:06,019 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-19 06:38:06,020 INFO L899 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2022-11-19 06:38:06,020 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-19 06:38:06,020 INFO L899 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2022-11-19 06:38:06,020 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-19 06:38:06,020 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-19 06:38:06,020 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-19 06:38:06,021 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-19 06:38:06,021 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-19 06:38:06,021 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-19 06:38:06,021 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-19 06:38:06,021 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-19 06:38:06,021 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-19 06:38:06,022 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-19 06:38:06,022 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-19 06:38:06,022 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-19 06:38:06,022 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-19 06:38:06,022 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-19 06:38:06,022 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-19 06:38:06,023 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-19 06:38:06,023 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-19 06:38:06,023 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:38:06,023 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-19 06:38:06,023 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-19 06:38:06,023 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-19 06:38:06,024 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse5 (<= ~a21~0 0)) (.cse0 (<= ~a17~0 0)) (.cse8 (<= ~a16~0 5)) (.cse6 (<= 5 ~a16~0)) (.cse2 (= ~a21~0 1)) (.cse7 (not (= ~a7~0 1))) (.cse1 (<= 14 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse2 .cse4 .cse3) (and .cse5 .cse0 .cse3) (and .cse5 .cse4 .cse3) (and .cse6 .cse7 .cse0 .cse1 .cse2) (and .cse5 .cse4 .cse8) (and .cse0 .cse2 .cse8) (and (or (and .cse2 (<= 15 ~a8~0)) (and .cse6 .cse2)) .cse7 .cse1 .cse4))) [2022-11-19 06:38:06,024 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-19 06:38:06,024 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-19 06:38:06,024 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-19 06:38:06,025 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-19 06:38:06,025 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-19 06:38:06,025 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-19 06:38:06,025 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-19 06:38:06,025 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:38:06,025 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-19 06:38:06,026 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-19 06:38:06,026 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-19 06:38:06,026 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-19 06:38:06,026 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-19 06:38:06,026 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-19 06:38:06,026 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-19 06:38:06,026 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-19 06:38:06,027 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-19 06:38:06,027 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-19 06:38:06,027 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-19 06:38:06,027 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-19 06:38:06,027 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-19 06:38:06,027 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-19 06:38:06,028 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-19 06:38:06,028 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse5 (<= ~a21~0 0)) (.cse0 (<= ~a17~0 0)) (.cse8 (<= ~a16~0 5)) (.cse6 (<= 5 ~a16~0)) (.cse2 (= ~a21~0 1)) (.cse7 (not (= ~a7~0 1))) (.cse1 (<= 14 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse2 .cse4 .cse3) (and .cse5 .cse0 .cse3) (and .cse5 .cse4 .cse3) (and .cse6 .cse7 .cse0 .cse1 .cse2) (and .cse5 .cse4 .cse8) (and .cse0 .cse2 .cse8) (and (or (and .cse2 (<= 15 ~a8~0)) (and .cse6 .cse2)) .cse7 .cse1 .cse4))) [2022-11-19 06:38:06,028 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-19 06:38:06,028 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 441) no Hoare annotation was computed. [2022-11-19 06:38:06,029 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-19 06:38:06,029 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-19 06:38:06,029 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-19 06:38:06,029 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-19 06:38:06,029 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-19 06:38:06,029 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-19 06:38:06,033 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:06,035 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:38:06,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:38:06 BoogieIcfgContainer [2022-11-19 06:38:06,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:38:06,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:38:06,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:38:06,055 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:38:06,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:52" (3/4) ... [2022-11-19 06:38:06,059 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:38:06,077 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-19 06:38:06,079 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-19 06:38:06,080 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-19 06:38:06,081 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:38:06,218 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:38:06,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:38:06,219 INFO L158 Benchmark]: Toolchain (without parser) took 15859.83ms. Allocated memory was 98.6MB in the beginning and 308.3MB in the end (delta: 209.7MB). Free memory was 62.9MB in the beginning and 117.5MB in the end (delta: -54.6MB). Peak memory consumption was 155.5MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,219 INFO L158 Benchmark]: CDTParser took 13.44ms. Allocated memory is still 98.6MB. Free memory was 50.8MB in the beginning and 70.0MB in the end (delta: -19.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 660.63ms. Allocated memory is still 98.6MB. Free memory was 62.7MB in the beginning and 57.3MB in the end (delta: 5.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.68ms. Allocated memory is still 98.6MB. Free memory was 57.3MB in the beginning and 51.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,221 INFO L158 Benchmark]: Boogie Preprocessor took 63.91ms. Allocated memory is still 98.6MB. Free memory was 51.5MB in the beginning and 46.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,222 INFO L158 Benchmark]: RCFGBuilder took 1742.55ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 46.8MB in the beginning and 91.8MB in the end (delta: -45.0MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,224 INFO L158 Benchmark]: TraceAbstraction took 13128.44ms. Allocated memory was 125.8MB in the beginning and 308.3MB in the end (delta: 182.5MB). Free memory was 91.8MB in the beginning and 128.0MB in the end (delta: -36.1MB). Peak memory consumption was 146.3MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,224 INFO L158 Benchmark]: Witness Printer took 163.88ms. Allocated memory is still 308.3MB. Free memory was 128.0MB in the beginning and 117.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:38:06,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 13.44ms. Allocated memory is still 98.6MB. Free memory was 50.8MB in the beginning and 70.0MB in the end (delta: -19.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 660.63ms. Allocated memory is still 98.6MB. Free memory was 62.7MB in the beginning and 57.3MB in the end (delta: 5.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.68ms. Allocated memory is still 98.6MB. Free memory was 57.3MB in the beginning and 51.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.91ms. Allocated memory is still 98.6MB. Free memory was 51.5MB in the beginning and 46.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1742.55ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 46.8MB in the beginning and 91.8MB in the end (delta: -45.0MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * TraceAbstraction took 13128.44ms. Allocated memory was 125.8MB in the beginning and 308.3MB in the end (delta: 182.5MB). Free memory was 91.8MB in the beginning and 128.0MB in the end (delta: -36.1MB). Peak memory consumption was 146.3MB. Max. memory is 16.1GB. * Witness Printer took 163.88ms. Allocated memory is still 308.3MB. Free memory was 128.0MB in the beginning and 117.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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 - PositiveResult [Line: 441]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 911 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 911 mSDsluCounter, 585 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 704 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2808 IncrementalHoareTripleChecker+Invalid, 3512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 704 mSolverCounterUnsat, 534 mSDtfsCounter, 2808 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=9, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1349 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 215 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3174 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 2040 NumberOfCodeBlocks, 2040 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2025 ConstructedInterpolants, 0 QuantifiedInterpolants, 7188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 1438/1552 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a17 <= 0 && 14 <= a8) && a21 == 1) && a20 == 1) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a21 <= 0 && a17 <= 0) && a20 == 1)) || ((a21 <= 0 && a17 == 1) && a20 == 1)) || ((((5 <= a16 && !(a7 == 1)) && a17 <= 0) && 14 <= a8) && a21 == 1)) || ((a21 <= 0 && a17 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || (((((a21 == 1 && 15 <= a8) || (5 <= a16 && a21 == 1)) && !(a7 == 1)) && 14 <= a8) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((a17 <= 0 && 14 <= a8) && a21 == 1) && a20 == 1) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a21 <= 0 && a17 <= 0) && a20 == 1)) || ((a21 <= 0 && a17 == 1) && a20 == 1)) || ((((5 <= a16 && !(a7 == 1)) && a17 <= 0) && 14 <= a8) && a21 == 1)) || ((a21 <= 0 && a17 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || (((((a21 == 1 && 15 <= a8) || (5 <= a16 && a21 == 1)) && !(a7 == 1)) && 14 <= a8) && a17 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-19 06:38:06,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148784de-9ed5-4b21-b3b7-fd17b903bf46/bin/utaipan-I9t0OCRTmS/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 Result: TRUE