./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V --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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:05:54,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:05:54,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:05:54,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:05:54,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:05:54,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:05:54,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:05:54,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:05:54,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:05:54,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:05:54,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:05:54,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:05:54,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:05:54,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:05:54,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:05:54,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:05:54,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:05:54,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:05:54,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:05:54,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:05:54,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:05:54,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:05:54,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:05:54,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:05:54,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:05:54,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:05:54,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:05:54,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:05:54,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:05:54,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:05:54,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:05:54,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:05:54,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:05:54,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:05:54,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:05:54,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:05:54,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:05:54,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:05:54,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:05:54,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:05:54,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:05:54,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:05:54,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:05:54,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:05:54,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:05:54,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:05:54,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:05:54,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:05:54,281 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:05:54,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:05:54,282 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:05:54,282 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:05:54,283 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:05:54,283 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:05:54,284 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:05:54,284 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:05:54,284 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:05:54,284 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:05:54,285 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:05:54,285 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:05:54,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:05:54,286 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:05:54,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:05:54,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:05:54,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:05:54,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:05:54,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:05:54,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:05:54,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:05:54,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:05:54,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:05:54,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:05:54,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:05:54,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:05:54,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:05:54,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:05:54,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:05:54,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:05:54,292 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:05:54,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:05:54,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:05:54,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:05:54,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:05:54,293 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2021-11-23 03:05:54,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:05:54,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:05:54,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:05:54,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:05:54,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:05:54,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2021-11-23 03:05:54,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/data/fc8ab04cf/ce94543628d94fa98f2adcfda387a432/FLAG3d73b9467 [2021-11-23 03:05:55,281 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:05:55,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2021-11-23 03:05:55,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/data/fc8ab04cf/ce94543628d94fa98f2adcfda387a432/FLAG3d73b9467 [2021-11-23 03:05:55,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/data/fc8ab04cf/ce94543628d94fa98f2adcfda387a432 [2021-11-23 03:05:55,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:05:55,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:05:55,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:05:55,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:05:55,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:05:55,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:55" (1/1) ... [2021-11-23 03:05:55,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e71cbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:55, skipping insertion in model container [2021-11-23 03:05:55,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:55" (1/1) ... [2021-11-23 03:05:55,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:05:55,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:05:55,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2021-11-23 03:05:55,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:55,971 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:05:55,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2021-11-23 03:05:56,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:56,061 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:05:56,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56 WrapperNode [2021-11-23 03:05:56,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:05:56,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:05:56,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:05:56,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:05:56,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,113 INFO L137 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-23 03:05:56,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:05:56,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:05:56,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:05:56,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:05:56,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:05:56,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:05:56,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:05:56,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:05:56,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (1/1) ... [2021-11-23 03:05:56,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:05:56,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:05:56,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:05:56,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:05:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-11-23 03:05:56,253 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-11-23 03:05:56,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:05:56,253 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-23 03:05:56,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:05:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:05:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2021-11-23 03:05:56,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2021-11-23 03:05:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-23 03:05:56,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-23 03:05:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:05:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:05:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:05:56,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:05:56,256 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 03:05:56,438 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:05:56,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:05:56,748 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:05:56,759 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:05:56,763 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:05:56,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:56 BoogieIcfgContainer [2021-11-23 03:05:56,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:05:56,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:05:56,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:05:56,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:05:56,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:05:55" (1/3) ... [2021-11-23 03:05:56,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4d08fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:56, skipping insertion in model container [2021-11-23 03:05:56,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:56" (2/3) ... [2021-11-23 03:05:56,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4d08fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:56, skipping insertion in model container [2021-11-23 03:05:56,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:56" (3/3) ... [2021-11-23 03:05:56,776 INFO L111 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2021-11-23 03:05:56,785 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 03:05:56,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:05:56,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 03:05:56,786 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 03:05:56,845 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,846 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,846 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,847 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,847 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,847 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,848 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,848 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,848 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,849 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,849 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,849 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,850 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,850 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,850 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,850 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,851 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,851 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,851 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,852 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,852 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,852 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,852 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,852 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,853 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,853 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,853 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,853 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,854 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,854 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,854 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,854 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,855 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,855 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,855 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,855 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,855 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,856 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,856 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,856 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,857 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,857 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,857 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,857 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,857 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,858 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,858 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,858 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,858 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,858 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,859 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,859 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,861 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,861 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,861 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,861 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,861 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,862 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,862 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,862 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,863 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,863 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,863 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,864 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,864 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,864 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,865 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,865 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,865 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,865 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,866 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,866 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,866 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,867 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,870 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,870 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,871 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,871 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,872 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,873 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,874 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,874 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,874 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,880 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,880 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,881 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,881 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,882 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,882 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,882 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,882 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,882 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,883 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,883 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,884 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,884 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,884 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,884 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,884 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,885 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,885 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,885 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,885 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,885 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,886 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,887 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,887 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,887 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,887 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,888 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,888 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,888 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,888 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,889 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,889 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,889 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,889 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,889 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,890 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,890 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,890 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,890 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,890 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,891 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,891 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,891 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,891 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,891 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,914 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,914 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,915 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,915 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,915 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,915 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,919 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,919 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,920 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,920 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,920 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,920 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,920 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,920 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,921 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,921 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,921 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,921 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,921 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,922 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,922 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,922 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,925 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,925 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,926 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,927 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,927 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,927 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,930 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,930 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,930 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,930 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,931 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,931 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,931 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,931 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,931 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,932 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,932 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,932 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,933 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,933 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,933 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,933 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,933 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,933 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,934 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,934 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:05:56,934 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-23 03:05:56,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:05:56,987 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:05:56,988 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-23 03:05:57,004 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-23 03:05:57,017 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 167 transitions, 349 flow [2021-11-23 03:05:57,020 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 167 transitions, 349 flow [2021-11-23 03:05:57,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 349 flow [2021-11-23 03:05:57,091 INFO L129 PetriNetUnfolder]: 5/164 cut-off events. [2021-11-23 03:05:57,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 03:05:57,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 5/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 252 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2021-11-23 03:05:57,111 INFO L116 LiptonReduction]: Number of co-enabled transitions 9784 [2021-11-23 03:06:03,979 INFO L131 LiptonReduction]: Checked pairs total: 20201 [2021-11-23 03:06:03,980 INFO L133 LiptonReduction]: Total number of compositions: 160 [2021-11-23 03:06:03,993 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 39 transitions, 93 flow [2021-11-23 03:06:04,203 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4452 states, 4441 states have (on average 3.5762215717180816) internal successors, (15882), 4451 states have internal predecessors, (15882), 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) [2021-11-23 03:06:04,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 4452 states, 4441 states have (on average 3.5762215717180816) internal successors, (15882), 4451 states have internal predecessors, (15882), 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) [2021-11-23 03:06:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:06:04,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:04,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:04,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1200885237, now seen corresponding path program 1 times [2021-11-23 03:06:04,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:04,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363033770] [2021-11-23 03:06:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:04,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:04,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:04,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363033770] [2021-11-23 03:06:04,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363033770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:04,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:04,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:06:04,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870042660] [2021-11-23 03:06:04,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:04,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:04,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:04,599 INFO L87 Difference]: Start difference. First operand has 4452 states, 4441 states have (on average 3.5762215717180816) internal successors, (15882), 4451 states have internal predecessors, (15882), 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 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-23 03:06:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:05,085 INFO L93 Difference]: Finished difference Result 5266 states and 18252 transitions. [2021-11-23 03:06:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:06:05,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-23 03:06:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:05,180 INFO L225 Difference]: With dead ends: 5266 [2021-11-23 03:06:05,180 INFO L226 Difference]: Without dead ends: 5252 [2021-11-23 03:06:05,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:05,185 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 129 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:05,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 48 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:06:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-11-23 03:06:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 5033. [2021-11-23 03:06:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 5022 states have (on average 3.5199123855037833) internal successors, (17677), 5032 states have internal predecessors, (17677), 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) [2021-11-23 03:06:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 17677 transitions. [2021-11-23 03:06:05,598 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 17677 transitions. Word has length 8 [2021-11-23 03:06:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:05,599 INFO L470 AbstractCegarLoop]: Abstraction has 5033 states and 17677 transitions. [2021-11-23 03:06:05,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-23 03:06:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 17677 transitions. [2021-11-23 03:06:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 03:06:05,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:05,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:05,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:06:05,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1686569171, now seen corresponding path program 1 times [2021-11-23 03:06:05,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:05,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193566845] [2021-11-23 03:06:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:05,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:05,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:05,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193566845] [2021-11-23 03:06:05,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193566845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:05,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:05,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:06:05,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201806727] [2021-11-23 03:06:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:05,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:05,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:05,710 INFO L87 Difference]: Start difference. First operand 5033 states and 17677 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-23 03:06:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:06,083 INFO L93 Difference]: Finished difference Result 5449 states and 18913 transitions. [2021-11-23 03:06:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:06:06,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-23 03:06:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:06,140 INFO L225 Difference]: With dead ends: 5449 [2021-11-23 03:06:06,140 INFO L226 Difference]: Without dead ends: 5343 [2021-11-23 03:06:06,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:06,142 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 108 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:06,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 42 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:06:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2021-11-23 03:06:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 4777. [2021-11-23 03:06:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4770 states have (on average 3.480503144654088) internal successors, (16602), 4776 states have internal predecessors, (16602), 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) [2021-11-23 03:06:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 16602 transitions. [2021-11-23 03:06:06,422 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 16602 transitions. Word has length 10 [2021-11-23 03:06:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:06,422 INFO L470 AbstractCegarLoop]: Abstraction has 4777 states and 16602 transitions. [2021-11-23 03:06:06,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-23 03:06:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 16602 transitions. [2021-11-23 03:06:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:06:06,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:06,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:06,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:06:06,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1696915213, now seen corresponding path program 1 times [2021-11-23 03:06:06,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347117300] [2021-11-23 03:06:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:06,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:06,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:06,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347117300] [2021-11-23 03:06:06,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347117300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:06,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:06,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:06:06,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800336726] [2021-11-23 03:06:06,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:06,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:06:06,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:06,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:06:06,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:06:06,478 INFO L87 Difference]: Start difference. First operand 4777 states and 16602 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-23 03:06:06,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:06,625 INFO L93 Difference]: Finished difference Result 2555 states and 5978 transitions. [2021-11-23 03:06:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:06:06,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-11-23 03:06:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:06,650 INFO L225 Difference]: With dead ends: 2555 [2021-11-23 03:06:06,651 INFO L226 Difference]: Without dead ends: 2547 [2021-11-23 03:06:06,651 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:06:06,652 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:06,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:06:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-11-23 03:06:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2319. [2021-11-23 03:06:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2298 states have (on average 2.39556135770235) internal successors, (5505), 2318 states have internal predecessors, (5505), 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) [2021-11-23 03:06:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 5505 transitions. [2021-11-23 03:06:06,735 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 5505 transitions. Word has length 11 [2021-11-23 03:06:06,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:06,735 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 5505 transitions. [2021-11-23 03:06:06,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-23 03:06:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 5505 transitions. [2021-11-23 03:06:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:06:06,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:06,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:06,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:06:06,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash 469459671, now seen corresponding path program 1 times [2021-11-23 03:06:06,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:06,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635300965] [2021-11-23 03:06:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:06,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:06,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635300965] [2021-11-23 03:06:06,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635300965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:06,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:06,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:06:06,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240929198] [2021-11-23 03:06:06,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:06,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:06,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:06,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:06,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:06,820 INFO L87 Difference]: Start difference. First operand 2319 states and 5505 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-23 03:06:07,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:07,034 INFO L93 Difference]: Finished difference Result 2251 states and 5281 transitions. [2021-11-23 03:06:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:06:07,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-23 03:06:07,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:07,052 INFO L225 Difference]: With dead ends: 2251 [2021-11-23 03:06:07,052 INFO L226 Difference]: Without dead ends: 2073 [2021-11-23 03:06:07,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:07,078 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 103 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:07,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 39 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:06:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-11-23 03:06:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2068. [2021-11-23 03:06:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2047 states have (on average 2.3527112848070346) internal successors, (4816), 2067 states have internal predecessors, (4816), 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) [2021-11-23 03:06:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 4816 transitions. [2021-11-23 03:06:07,144 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 4816 transitions. Word has length 12 [2021-11-23 03:06:07,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:07,144 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 4816 transitions. [2021-11-23 03:06:07,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-23 03:06:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 4816 transitions. [2021-11-23 03:06:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:06:07,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:07,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:07,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:06:07,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash -238155576, now seen corresponding path program 1 times [2021-11-23 03:06:07,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:07,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110728413] [2021-11-23 03:06:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:07,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:07,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:07,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110728413] [2021-11-23 03:06:07,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110728413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:07,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:07,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:07,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888626584] [2021-11-23 03:06:07,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:07,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:07,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:07,240 INFO L87 Difference]: Start difference. First operand 2068 states and 4816 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-23 03:06:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:07,516 INFO L93 Difference]: Finished difference Result 2380 states and 5420 transitions. [2021-11-23 03:06:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:06:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2021-11-23 03:06:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:07,543 INFO L225 Difference]: With dead ends: 2380 [2021-11-23 03:06:07,543 INFO L226 Difference]: Without dead ends: 2351 [2021-11-23 03:06:07,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:06:07,544 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 137 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:07,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 58 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:06:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-11-23 03:06:07,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2027. [2021-11-23 03:06:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2008 states have (on average 2.3461155378486054) internal successors, (4711), 2026 states have internal predecessors, (4711), 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) [2021-11-23 03:06:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 4711 transitions. [2021-11-23 03:06:07,643 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 4711 transitions. Word has length 13 [2021-11-23 03:06:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:07,643 INFO L470 AbstractCegarLoop]: Abstraction has 2027 states and 4711 transitions. [2021-11-23 03:06:07,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-23 03:06:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 4711 transitions. [2021-11-23 03:06:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:06:07,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:07,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:07,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:06:07,646 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:07,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1015119808, now seen corresponding path program 1 times [2021-11-23 03:06:07,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:07,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046857249] [2021-11-23 03:06:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:07,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:07,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:07,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046857249] [2021-11-23 03:06:07,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046857249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:07,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:07,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:06:07,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532077435] [2021-11-23 03:06:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:07,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:07,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:07,760 INFO L87 Difference]: Start difference. First operand 2027 states and 4711 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-23 03:06:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:07,857 INFO L93 Difference]: Finished difference Result 1056 states and 2078 transitions. [2021-11-23 03:06:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:06:07,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-11-23 03:06:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:07,862 INFO L225 Difference]: With dead ends: 1056 [2021-11-23 03:06:07,862 INFO L226 Difference]: Without dead ends: 1006 [2021-11-23 03:06:07,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:07,867 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:07,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:06:07,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-23 03:06:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 990. [2021-11-23 03:06:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 976 states have (on average 2.0174180327868854) internal successors, (1969), 989 states have internal predecessors, (1969), 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) [2021-11-23 03:06:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1969 transitions. [2021-11-23 03:06:07,897 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1969 transitions. Word has length 15 [2021-11-23 03:06:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:07,898 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1969 transitions. [2021-11-23 03:06:07,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-23 03:06:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1969 transitions. [2021-11-23 03:06:07,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:06:07,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:07,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:07,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:06:07,900 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1451696868, now seen corresponding path program 1 times [2021-11-23 03:06:07,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:07,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335286889] [2021-11-23 03:06:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:07,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:07,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335286889] [2021-11-23 03:06:07,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335286889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:07,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:07,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:07,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516144263] [2021-11-23 03:06:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:07,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:07,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:07,988 INFO L87 Difference]: Start difference. First operand 990 states and 1969 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-23 03:06:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:08,323 INFO L93 Difference]: Finished difference Result 1094 states and 2099 transitions. [2021-11-23 03:06:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:06:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-11-23 03:06:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:08,327 INFO L225 Difference]: With dead ends: 1094 [2021-11-23 03:06:08,327 INFO L226 Difference]: Without dead ends: 1042 [2021-11-23 03:06:08,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:06:08,328 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 164 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:08,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 51 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:06:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-11-23 03:06:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 912. [2021-11-23 03:06:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 901 states have (on average 1.974472807991121) internal successors, (1779), 911 states have internal predecessors, (1779), 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) [2021-11-23 03:06:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1779 transitions. [2021-11-23 03:06:08,359 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1779 transitions. Word has length 16 [2021-11-23 03:06:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:08,360 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1779 transitions. [2021-11-23 03:06:08,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-23 03:06:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1779 transitions. [2021-11-23 03:06:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:06:08,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:08,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:08,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:06:08,362 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1504110012, now seen corresponding path program 1 times [2021-11-23 03:06:08,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:08,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552513640] [2021-11-23 03:06:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:08,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:08,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552513640] [2021-11-23 03:06:08,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552513640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:08,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:08,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:08,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30429690] [2021-11-23 03:06:08,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:08,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:08,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:08,442 INFO L87 Difference]: Start difference. First operand 912 states and 1779 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-23 03:06:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:08,806 INFO L93 Difference]: Finished difference Result 1019 states and 1985 transitions. [2021-11-23 03:06:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:06:08,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-11-23 03:06:08,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:08,810 INFO L225 Difference]: With dead ends: 1019 [2021-11-23 03:06:08,810 INFO L226 Difference]: Without dead ends: 933 [2021-11-23 03:06:08,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:06:08,811 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 144 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:08,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 42 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:06:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-23 03:06:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 841. [2021-11-23 03:06:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 835 states have (on average 1.9269461077844312) internal successors, (1609), 840 states have internal predecessors, (1609), 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) [2021-11-23 03:06:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1609 transitions. [2021-11-23 03:06:08,840 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1609 transitions. Word has length 19 [2021-11-23 03:06:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:08,841 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1609 transitions. [2021-11-23 03:06:08,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-23 03:06:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1609 transitions. [2021-11-23 03:06:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:06:08,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:08,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:08,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:06:08,843 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1091369728, now seen corresponding path program 1 times [2021-11-23 03:06:08,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:08,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049111134] [2021-11-23 03:06:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:08,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:08,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:08,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049111134] [2021-11-23 03:06:08,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049111134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:08,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:08,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:06:08,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366256519] [2021-11-23 03:06:08,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:08,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:08,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:08,914 INFO L87 Difference]: Start difference. First operand 841 states and 1609 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-23 03:06:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:08,981 INFO L93 Difference]: Finished difference Result 344 states and 542 transitions. [2021-11-23 03:06:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:06:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-11-23 03:06:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:08,982 INFO L225 Difference]: With dead ends: 344 [2021-11-23 03:06:08,983 INFO L226 Difference]: Without dead ends: 282 [2021-11-23 03:06:08,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:08,984 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:08,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:06:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-23 03:06:08,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 250. [2021-11-23 03:06:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.6626506024096386) internal successors, (414), 249 states have internal predecessors, (414), 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) [2021-11-23 03:06:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 414 transitions. [2021-11-23 03:06:08,993 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 414 transitions. Word has length 19 [2021-11-23 03:06:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:08,993 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 414 transitions. [2021-11-23 03:06:08,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-23 03:06:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 414 transitions. [2021-11-23 03:06:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:06:08,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:08,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:08,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:06:08,995 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-23 03:06:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 20246388, now seen corresponding path program 1 times [2021-11-23 03:06:08,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:08,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084380522] [2021-11-23 03:06:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:08,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:09,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:09,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084380522] [2021-11-23 03:06:09,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084380522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:09,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:09,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:09,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937414828] [2021-11-23 03:06:09,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:09,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:09,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:09,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:09,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:09,077 INFO L87 Difference]: Start difference. First operand 250 states and 414 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-11-23 03:06:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:09,235 INFO L93 Difference]: Finished difference Result 230 states and 378 transitions. [2021-11-23 03:06:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:06:09,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2021-11-23 03:06:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:09,236 INFO L225 Difference]: With dead ends: 230 [2021-11-23 03:06:09,236 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:06:09,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:06:09,237 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 58 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:09,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 21 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:06:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:06:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:06:09,238 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) [2021-11-23 03:06:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:06:09,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-23 03:06:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:09,239 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:06:09,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-11-23 03:06:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:06:09,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:06:09,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2021-11-23 03:06:09,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2021-11-23 03:06:09,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2021-11-23 03:06:09,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2021-11-23 03:06:09,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 9 remaining) [2021-11-23 03:06:09,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 9 remaining) [2021-11-23 03:06:09,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 9 remaining) [2021-11-23 03:06:09,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2021-11-23 03:06:09,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2021-11-23 03:06:09,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:06:09,247 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:09,255 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 03:06:09,255 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:06:09,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:06:09 BasicIcfg [2021-11-23 03:06:09,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:06:09,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:06:09,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:06:09,259 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:06:09,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:56" (3/4) ... [2021-11-23 03:06:09,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:06:09,270 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-11-23 03:06:09,270 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2021-11-23 03:06:09,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-11-23 03:06:09,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-23 03:06:09,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 03:06:09,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:06:09,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:06:09,324 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:06:09,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:06:09,326 INFO L158 Benchmark]: Toolchain (without parser) took 13786.68ms. Allocated memory was 123.7MB in the beginning and 308.3MB in the end (delta: 184.5MB). Free memory was 89.1MB in the beginning and 121.3MB in the end (delta: -32.2MB). Peak memory consumption was 151.4MB. Max. memory is 16.1GB. [2021-11-23 03:06:09,326 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 40.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:06:09,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.14ms. Allocated memory is still 123.7MB. Free memory was 89.1MB in the beginning and 87.9MB in the end (delta: 1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:06:09,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.26ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 85.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:06:09,327 INFO L158 Benchmark]: Boogie Preprocessor took 29.76ms. Allocated memory is still 123.7MB. Free memory was 85.9MB in the beginning and 84.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:06:09,327 INFO L158 Benchmark]: RCFGBuilder took 622.43ms. Allocated memory is still 123.7MB. Free memory was 84.4MB in the beginning and 69.1MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 03:06:09,329 INFO L158 Benchmark]: TraceAbstraction took 12489.02ms. Allocated memory was 123.7MB in the beginning and 308.3MB in the end (delta: 184.5MB). Free memory was 68.6MB in the beginning and 124.5MB in the end (delta: -55.8MB). Peak memory consumption was 130.7MB. Max. memory is 16.1GB. [2021-11-23 03:06:09,329 INFO L158 Benchmark]: Witness Printer took 66.08ms. Allocated memory is still 308.3MB. Free memory was 124.5MB in the beginning and 121.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:06:09,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 40.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.14ms. Allocated memory is still 123.7MB. Free memory was 89.1MB in the beginning and 87.9MB in the end (delta: 1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.26ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 85.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.76ms. Allocated memory is still 123.7MB. Free memory was 85.9MB in the beginning and 84.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 622.43ms. Allocated memory is still 123.7MB. Free memory was 84.4MB in the beginning and 69.1MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12489.02ms. Allocated memory was 123.7MB in the beginning and 308.3MB in the end (delta: 184.5MB). Free memory was 68.6MB in the beginning and 124.5MB in the end (delta: -55.8MB). Peak memory consumption was 130.7MB. Max. memory is 16.1GB. * Witness Printer took 66.08ms. Allocated memory is still 308.3MB. Free memory was 124.5MB in the beginning and 121.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.0s, 172 PlacesBefore, 48 PlacesAfterwards, 167 TransitionsBefore, 39 TransitionsAfterwards, 9784 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 104 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 160 TotalNumberOfCompositions, 20201 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10755, positive: 10408, positive conditional: 0, positive unconditional: 10408, negative: 347, negative conditional: 0, negative unconditional: 347, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6599, positive: 6496, positive conditional: 0, positive unconditional: 6496, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6599, positive: 6434, positive conditional: 0, positive unconditional: 6434, negative: 165, negative conditional: 0, negative unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 165, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 380, positive: 109, positive conditional: 0, positive unconditional: 109, negative: 271, negative conditional: 0, negative unconditional: 271, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10755, positive: 3912, positive conditional: 0, positive unconditional: 3912, negative: 244, negative conditional: 0, negative unconditional: 244, unknown: 6599, unknown conditional: 0, unknown unconditional: 6599] , Statistics on independence cache: Total cache size (in pairs): 380, Positive cache size: 333, Positive conditional cache size: 0, Positive unconditional cache size: 333, Negative cache size: 47, Negative conditional cache size: 0, Negative unconditional cache size: 47 - 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 with 1 thread instances CFG has 7 procedures, 237 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 923 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 923 mSDsluCounter, 335 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 962 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1878 IncrementalHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 123 mSDtfsCounter, 1878 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5033occurred in iteration=1, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 1612 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 03:06:09,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb59dd3-7be2-430f-97f4-ab8c396c9d0d/bin/utaipan-EQgc7hIp5V/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