./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan --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 fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:53:40,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:53:40,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:53:40,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:53:40,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:53:40,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:53:40,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:53:40,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:53:40,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:53:40,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:53:40,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:53:40,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:53:40,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:53:40,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:53:40,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:53:40,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:53:40,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:53:40,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:53:40,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:53:40,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:53:40,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:53:40,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:53:40,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:53:40,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:53:40,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:53:40,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:53:40,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:53:40,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:53:40,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:53:40,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:53:40,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:53:40,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:53:40,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:53:40,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:53:40,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:53:40,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:53:40,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:53:40,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:53:40,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:53:40,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:53:40,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:53:40,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:53:40,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:53:40,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:53:40,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:53:40,261 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:53:40,261 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:53:40,262 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:53:40,262 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:53:40,263 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:53:40,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:53:40,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:53:40,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:53:40,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:53:40,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:53:40,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:53:40,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:53:40,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:53:40,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:53:40,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:53:40,265 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-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d [2020-12-09 17:53:40,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:53:40,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:53:40,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:53:40,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:53:40,452 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:53:40,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-12-09 17:53:40,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/data/31769e4e7/d5837eb42a1049dd8466b39481358a50/FLAG608608c4a [2020-12-09 17:53:40,911 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:53:40,911 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-12-09 17:53:40,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/data/31769e4e7/d5837eb42a1049dd8466b39481358a50/FLAG608608c4a [2020-12-09 17:53:40,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/data/31769e4e7/d5837eb42a1049dd8466b39481358a50 [2020-12-09 17:53:40,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:53:40,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:53:40,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:53:40,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:53:40,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:53:40,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:53:40" (1/1) ... [2020-12-09 17:53:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8b8faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:40, skipping insertion in model container [2020-12-09 17:53:40,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:53:40" (1/1) ... [2020-12-09 17:53:40,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:53:40,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:53:41,091 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i[950,963] [2020-12-09 17:53:41,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:53:41,194 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:53:41,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i[950,963] [2020-12-09 17:53:41,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:53:41,274 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:53:41,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41 WrapperNode [2020-12-09 17:53:41,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:53:41,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:53:41,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:53:41,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:53:41,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:53:41,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:53:41,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:53:41,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:53:41,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... [2020-12-09 17:53:41,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:53:41,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:53:41,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:53:41,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:53:41,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:53:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 17:53:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 17:53:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:53:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 17:53:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 17:53:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 17:53:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 17:53:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 17:53:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 17:53:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 17:53:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:53:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 17:53:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:53:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:53:41,388 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 17:53:41,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:53:41,608 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 17:53:41,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:53:41 BoogieIcfgContainer [2020-12-09 17:53:41,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:53:41,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:53:41,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:53:41,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:53:41,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:53:40" (1/3) ... [2020-12-09 17:53:41,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e33efe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:53:41, skipping insertion in model container [2020-12-09 17:53:41,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:53:41" (2/3) ... [2020-12-09 17:53:41,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e33efe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:53:41, skipping insertion in model container [2020-12-09 17:53:41,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:53:41" (3/3) ... [2020-12-09 17:53:41,616 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-12-09 17:53:41,626 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 17:53:41,627 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:53:41,629 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 17:53:41,630 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 17:53:41,653 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,653 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,653 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,653 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,657 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,657 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,659 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,661 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,661 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,666 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,667 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:53:41,668 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 17:53:41,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 17:53:41,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:53:41,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:53:41,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:53:41,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:53:41,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:53:41,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:53:41,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:53:41,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:53:41,700 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 17:53:41,702 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-09 17:53:41,704 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-09 17:53:41,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-09 17:53:41,736 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-09 17:53:41,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 17:53:41,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-09 17:53:41,741 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-09 17:53:43,502 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-09 17:53:43,713 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-09 17:53:43,862 INFO L131 LiptonReduction]: Checked pairs total: 2226 [2020-12-09 17:53:43,862 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-09 17:53:43,867 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-09 17:53:43,879 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-09 17:53:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-09 17:53:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 17:53:43,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:43,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:43,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:43,889 INFO L82 PathProgramCache]: Analyzing trace with hash -938351108, now seen corresponding path program 1 times [2020-12-09 17:53:43,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:43,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201820615] [2020-12-09 17:53:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201820615] [2020-12-09 17:53:44,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 17:53:44,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77235265] [2020-12-09 17:53:44,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:53:44,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:53:44,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:53:44,061 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-09 17:53:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,093 INFO L93 Difference]: Finished difference Result 316 states and 835 transitions. [2020-12-09 17:53:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:53:44,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 17:53:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,107 INFO L225 Difference]: With dead ends: 316 [2020-12-09 17:53:44,108 INFO L226 Difference]: Without dead ends: 205 [2020-12-09 17:53:44,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:53:44,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-09 17:53:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2020-12-09 17:53:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-09 17:53:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 485 transitions. [2020-12-09 17:53:44,160 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 485 transitions. Word has length 8 [2020-12-09 17:53:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,161 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 485 transitions. [2020-12-09 17:53:44,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:53:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 485 transitions. [2020-12-09 17:53:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 17:53:44,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:53:44,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,162 INFO L82 PathProgramCache]: Analyzing trace with hash 395784729, now seen corresponding path program 1 times [2020-12-09 17:53:44,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596953113] [2020-12-09 17:53:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596953113] [2020-12-09 17:53:44,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:53:44,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115620201] [2020-12-09 17:53:44,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:53:44,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:53:44,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,223 INFO L87 Difference]: Start difference. First operand 187 states and 485 transitions. Second operand 4 states. [2020-12-09 17:53:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,244 INFO L93 Difference]: Finished difference Result 196 states and 488 transitions. [2020-12-09 17:53:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:53:44,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 17:53:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,247 INFO L225 Difference]: With dead ends: 196 [2020-12-09 17:53:44,247 INFO L226 Difference]: Without dead ends: 196 [2020-12-09 17:53:44,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-09 17:53:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2020-12-09 17:53:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-09 17:53:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 455 transitions. [2020-12-09 17:53:44,264 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 455 transitions. Word has length 9 [2020-12-09 17:53:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,264 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 455 transitions. [2020-12-09 17:53:44,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:53:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 455 transitions. [2020-12-09 17:53:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 17:53:44,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:53:44,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,267 INFO L82 PathProgramCache]: Analyzing trace with hash 975885903, now seen corresponding path program 1 times [2020-12-09 17:53:44,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115954067] [2020-12-09 17:53:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115954067] [2020-12-09 17:53:44,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:53:44,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49992464] [2020-12-09 17:53:44,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:53:44,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:53:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,324 INFO L87 Difference]: Start difference. First operand 178 states and 455 transitions. Second operand 4 states. [2020-12-09 17:53:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,340 INFO L93 Difference]: Finished difference Result 187 states and 464 transitions. [2020-12-09 17:53:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:53:44,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 17:53:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,342 INFO L225 Difference]: With dead ends: 187 [2020-12-09 17:53:44,343 INFO L226 Difference]: Without dead ends: 187 [2020-12-09 17:53:44,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-09 17:53:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-12-09 17:53:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-09 17:53:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 431 transitions. [2020-12-09 17:53:44,354 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 431 transitions. Word has length 9 [2020-12-09 17:53:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,354 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 431 transitions. [2020-12-09 17:53:44,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:53:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 431 transitions. [2020-12-09 17:53:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:53:44,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 17:53:44,356 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash -615576110, now seen corresponding path program 1 times [2020-12-09 17:53:44,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414146715] [2020-12-09 17:53:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414146715] [2020-12-09 17:53:44,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:53:44,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860528070] [2020-12-09 17:53:44,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:53:44,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:53:44,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,404 INFO L87 Difference]: Start difference. First operand 169 states and 431 transitions. Second operand 4 states. [2020-12-09 17:53:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,426 INFO L93 Difference]: Finished difference Result 209 states and 515 transitions. [2020-12-09 17:53:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:53:44,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 17:53:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,428 INFO L225 Difference]: With dead ends: 209 [2020-12-09 17:53:44,428 INFO L226 Difference]: Without dead ends: 197 [2020-12-09 17:53:44,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:53:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-09 17:53:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2020-12-09 17:53:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-09 17:53:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 446 transitions. [2020-12-09 17:53:44,435 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 446 transitions. Word has length 10 [2020-12-09 17:53:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,435 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 446 transitions. [2020-12-09 17:53:44,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:53:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 446 transitions. [2020-12-09 17:53:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:53:44,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 17:53:44,437 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash 187690604, now seen corresponding path program 2 times [2020-12-09 17:53:44,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929138129] [2020-12-09 17:53:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929138129] [2020-12-09 17:53:44,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:53:44,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587901664] [2020-12-09 17:53:44,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:53:44,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:53:44,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:53:44,475 INFO L87 Difference]: Start difference. First operand 175 states and 446 transitions. Second operand 5 states. [2020-12-09 17:53:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,495 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2020-12-09 17:53:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:53:44,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 17:53:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,496 INFO L225 Difference]: With dead ends: 234 [2020-12-09 17:53:44,496 INFO L226 Difference]: Without dead ends: 144 [2020-12-09 17:53:44,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:53:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-09 17:53:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2020-12-09 17:53:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-09 17:53:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 315 transitions. [2020-12-09 17:53:44,501 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 315 transitions. Word has length 10 [2020-12-09 17:53:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,501 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 315 transitions. [2020-12-09 17:53:44,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:53:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 315 transitions. [2020-12-09 17:53:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 17:53:44,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 17:53:44,502 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1342775669, now seen corresponding path program 1 times [2020-12-09 17:53:44,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368854801] [2020-12-09 17:53:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368854801] [2020-12-09 17:53:44,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:53:44,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619923449] [2020-12-09 17:53:44,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:53:44,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:53:44,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,541 INFO L87 Difference]: Start difference. First operand 132 states and 315 transitions. Second operand 4 states. [2020-12-09 17:53:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,562 INFO L93 Difference]: Finished difference Result 155 states and 339 transitions. [2020-12-09 17:53:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:53:44,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 17:53:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,563 INFO L225 Difference]: With dead ends: 155 [2020-12-09 17:53:44,563 INFO L226 Difference]: Without dead ends: 115 [2020-12-09 17:53:44,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:53:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-09 17:53:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-09 17:53:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 17:53:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 251 transitions. [2020-12-09 17:53:44,567 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 251 transitions. Word has length 11 [2020-12-09 17:53:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,567 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 251 transitions. [2020-12-09 17:53:44,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:53:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 251 transitions. [2020-12-09 17:53:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:53:44,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 17:53:44,568 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1283997363, now seen corresponding path program 1 times [2020-12-09 17:53:44,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565868777] [2020-12-09 17:53:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565868777] [2020-12-09 17:53:44,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:53:44,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855339415] [2020-12-09 17:53:44,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:53:44,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:53:44,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:53:44,604 INFO L87 Difference]: Start difference. First operand 115 states and 251 transitions. Second operand 5 states. [2020-12-09 17:53:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,632 INFO L93 Difference]: Finished difference Result 116 states and 234 transitions. [2020-12-09 17:53:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 17:53:44,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 17:53:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,633 INFO L225 Difference]: With dead ends: 116 [2020-12-09 17:53:44,633 INFO L226 Difference]: Without dead ends: 89 [2020-12-09 17:53:44,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:53:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-09 17:53:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-09 17:53:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 17:53:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 176 transitions. [2020-12-09 17:53:44,636 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 176 transitions. Word has length 12 [2020-12-09 17:53:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,636 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 176 transitions. [2020-12-09 17:53:44,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:53:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 176 transitions. [2020-12-09 17:53:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 17:53:44,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 17:53:44,637 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1633997476, now seen corresponding path program 1 times [2020-12-09 17:53:44,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504694784] [2020-12-09 17:53:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504694784] [2020-12-09 17:53:44,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:53:44,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152904275] [2020-12-09 17:53:44,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:53:44,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:53:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:53:44,676 INFO L87 Difference]: Start difference. First operand 89 states and 176 transitions. Second operand 6 states. [2020-12-09 17:53:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,706 INFO L93 Difference]: Finished difference Result 85 states and 166 transitions. [2020-12-09 17:53:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 17:53:44,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 17:53:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,707 INFO L225 Difference]: With dead ends: 85 [2020-12-09 17:53:44,707 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 17:53:44,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:53:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 17:53:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-09 17:53:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-09 17:53:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 83 transitions. [2020-12-09 17:53:44,709 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 83 transitions. Word has length 14 [2020-12-09 17:53:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,709 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 83 transitions. [2020-12-09 17:53:44,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:53:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 83 transitions. [2020-12-09 17:53:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 17:53:44,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 17:53:44,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1390745954, now seen corresponding path program 1 times [2020-12-09 17:53:44,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479207192] [2020-12-09 17:53:44,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479207192] [2020-12-09 17:53:44,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:53:44,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397070844] [2020-12-09 17:53:44,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:53:44,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:53:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:53:44,737 INFO L87 Difference]: Start difference. First operand 46 states and 83 transitions. Second operand 3 states. [2020-12-09 17:53:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,743 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-12-09 17:53:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:53:44,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-09 17:53:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,744 INFO L225 Difference]: With dead ends: 59 [2020-12-09 17:53:44,744 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 17:53:44,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:53:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 17:53:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 17:53:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 17:53:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-09 17:53:44,745 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-12-09 17:53:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,746 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-09 17:53:44,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:53:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-09 17:53:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 17:53:44,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:53:44,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:53:44,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 17:53:44,746 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:53:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:53:44,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1414383408, now seen corresponding path program 2 times [2020-12-09 17:53:44,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:53:44,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977915601] [2020-12-09 17:53:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:53:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:53:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:53:44,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977915601] [2020-12-09 17:53:44,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:53:44,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:53:44,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382866665] [2020-12-09 17:53:44,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:53:44,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:53:44,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:53:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:53:44,773 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-09 17:53:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:53:44,782 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-12-09 17:53:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:53:44,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 17:53:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:53:44,782 INFO L225 Difference]: With dead ends: 32 [2020-12-09 17:53:44,782 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:53:44,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:53:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:53:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:53:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:53:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:53:44,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 17:53:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:53:44,783 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:53:44,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:53:44,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:53:44,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:53:44,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 17:53:44,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:53:44 BasicIcfg [2020-12-09 17:53:44,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:53:44,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:53:44,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:53:44,786 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:53:44,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:53:41" (3/4) ... [2020-12-09 17:53:44,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 17:53:44,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 17:53:44,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 17:53:44,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 17:53:44,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 17:53:44,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 17:53:44,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:53:44,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:53:44,823 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2696ac26-d0c6-47e4-8ee3-e031139c8548/bin/utaipan/witness.graphml [2020-12-09 17:53:44,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:53:44,824 INFO L168 Benchmark]: Toolchain (without parser) took 3890.13 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 70.4 MB in the beginning and 117.3 MB in the end (delta: -46.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:53:44,825 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:53:44,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.91 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 64.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:53:44,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 62.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:53:44,826 INFO L168 Benchmark]: Boogie Preprocessor took 19.03 ms. Allocated memory is still 109.1 MB. Free memory was 62.2 MB in the beginning and 61.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:53:44,826 INFO L168 Benchmark]: RCFGBuilder took 282.92 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 61.0 MB in the beginning and 104.2 MB in the end (delta: -43.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:53:44,827 INFO L168 Benchmark]: TraceAbstraction took 3174.39 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 103.4 MB in the beginning and 120.5 MB in the end (delta: -17.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:53:44,827 INFO L168 Benchmark]: Witness Printer took 37.36 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 117.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:53:44,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.91 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 64.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 62.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.03 ms. Allocated memory is still 109.1 MB. Free memory was 62.2 MB in the beginning and 61.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 282.92 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 61.0 MB in the beginning and 104.2 MB in the end (delta: -43.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3174.39 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 103.4 MB in the beginning and 120.5 MB in the end (delta: -17.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 37.36 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 117.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 727 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2226 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 166 SDtfs, 180 SDslu, 215 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4619 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...