./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.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_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/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 586443bdba3a0440a46012510813ca1b149248c0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:56:50,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 13:56:50,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 13:56:50,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 13:56:50,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 13:56:50,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 13:56:50,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 13:56:50,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 13:56:50,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 13:56:50,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 13:56:50,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 13:56:50,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 13:56:50,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 13:56:50,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 13:56:50,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 13:56:50,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 13:56:50,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 13:56:50,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 13:56:50,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 13:56:50,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 13:56:50,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 13:56:50,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 13:56:50,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 13:56:50,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 13:56:50,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 13:56:50,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 13:56:50,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 13:56:50,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 13:56:50,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 13:56:50,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 13:56:50,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 13:56:50,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 13:56:50,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 13:56:50,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 13:56:50,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 13:56:50,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 13:56:50,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 13:56:50,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 13:56:50,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 13:56:50,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 13:56:50,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 13:56:50,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 13:56:50,280 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 13:56:50,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 13:56:50,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 13:56:50,281 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 13:56:50,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 13:56:50,281 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 13:56:50,281 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 13:56:50,281 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 13:56:50,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 13:56:50,282 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 13:56:50,282 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 13:56:50,282 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 13:56:50,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 13:56:50,282 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 13:56:50,282 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 13:56:50,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 13:56:50,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 13:56:50,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 13:56:50,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 13:56:50,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 13:56:50,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 13:56:50,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 13:56:50,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 13:56:50,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 13:56:50,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 13:56:50,285 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_14fac670-668e-43b0-9d4d-019e567a762e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586443bdba3a0440a46012510813ca1b149248c0 [2020-12-09 13:56:50,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 13:56:50,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 13:56:50,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 13:56:50,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 13:56:50,475 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 13:56:50,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2020-12-09 13:56:50,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/data/e34ca220f/b6d8efdec70e47c287d91bdf926d07ae/FLAG224b2ba8f [2020-12-09 13:56:50,942 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 13:56:50,943 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2020-12-09 13:56:50,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/data/e34ca220f/b6d8efdec70e47c287d91bdf926d07ae/FLAG224b2ba8f [2020-12-09 13:56:50,964 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/data/e34ca220f/b6d8efdec70e47c287d91bdf926d07ae [2020-12-09 13:56:50,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 13:56:50,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 13:56:50,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 13:56:50,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 13:56:50,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 13:56:50,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:56:50" (1/1) ... [2020-12-09 13:56:50,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f77440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:50, skipping insertion in model container [2020-12-09 13:56:50,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:56:50" (1/1) ... [2020-12-09 13:56:50,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 13:56:51,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 13:56:51,130 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_14fac670-668e-43b0-9d4d-019e567a762e/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i[950,963] [2020-12-09 13:56:51,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:56:51,249 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 13:56:51,258 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_14fac670-668e-43b0-9d4d-019e567a762e/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i[950,963] [2020-12-09 13:56:51,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:56:51,332 INFO L208 MainTranslator]: Completed translation [2020-12-09 13:56:51,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51 WrapperNode [2020-12-09 13:56:51,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 13:56:51,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 13:56:51,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 13:56:51,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 13:56:51,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 13:56:51,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 13:56:51,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 13:56:51,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 13:56:51,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... [2020-12-09 13:56:51,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 13:56:51,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 13:56:51,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 13:56:51,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 13:56:51,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/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 13:56:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 13:56:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 13:56:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 13:56:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 13:56:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 13:56:51,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 13:56:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 13:56:51,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 13:56:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 13:56:51,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 13:56:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-09 13:56:51,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-09 13:56:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 13:56:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 13:56:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 13:56:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 13:56:51,441 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 13:56:51,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 13:56:51,690 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 13:56:51,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:56:51 BoogieIcfgContainer [2020-12-09 13:56:51,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 13:56:51,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 13:56:51,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 13:56:51,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 13:56:51,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:56:50" (1/3) ... [2020-12-09 13:56:51,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661718c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:56:51, skipping insertion in model container [2020-12-09 13:56:51,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:56:51" (2/3) ... [2020-12-09 13:56:51,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661718c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:56:51, skipping insertion in model container [2020-12-09 13:56:51,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:56:51" (3/3) ... [2020-12-09 13:56:51,697 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-12-09 13:56:51,707 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 13:56:51,707 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 13:56:51,709 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 13:56:51,710 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,736 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,737 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,745 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,746 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:56:51,749 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 13:56:51,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 13:56:51,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 13:56:51,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 13:56:51,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 13:56:51,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 13:56:51,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 13:56:51,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 13:56:51,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 13:56:51,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 13:56:51,779 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 13:56:51,780 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-09 13:56:51,782 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-09 13:56:51,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2020-12-09 13:56:51,814 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2020-12-09 13:56:51,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 13:56:51,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2020-12-09 13:56:51,820 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2020-12-09 13:56:53,941 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-09 13:56:54,173 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-09 13:56:54,247 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2020-12-09 13:56:54,247 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-09 13:56:54,251 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-12-09 13:56:54,312 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-12-09 13:56:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-12-09 13:56:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 13:56:54,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:54,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:54,320 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2020-12-09 13:56:54,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:54,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962128133] [2020-12-09 13:56:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:54,449 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 13:56:54,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962128133] [2020-12-09 13:56:54,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:54,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:56:54,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639974557] [2020-12-09 13:56:54,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 13:56:54,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:54,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 13:56:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 13:56:54,465 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-12-09 13:56:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:54,514 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-12-09 13:56:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 13:56:54,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 13:56:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:54,541 INFO L225 Difference]: With dead ends: 1450 [2020-12-09 13:56:54,542 INFO L226 Difference]: Without dead ends: 1194 [2020-12-09 13:56:54,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 13:56:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-09 13:56:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-12-09 13:56:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-09 13:56:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-12-09 13:56:54,631 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-12-09 13:56:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:54,632 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-12-09 13:56:54,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 13:56:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-12-09 13:56:54,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 13:56:54,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:54,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:54,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 13:56:54,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:54,635 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2020-12-09 13:56:54,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:54,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104140186] [2020-12-09 13:56:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:54,734 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 13:56:54,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104140186] [2020-12-09 13:56:54,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:54,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:56:54,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034334286] [2020-12-09 13:56:54,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:56:54,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:54,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:56:54,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:56:54,737 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-12-09 13:56:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:54,783 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2020-12-09 13:56:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:56:54,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 13:56:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:54,792 INFO L225 Difference]: With dead ends: 1448 [2020-12-09 13:56:54,792 INFO L226 Difference]: Without dead ends: 1192 [2020-12-09 13:56:54,793 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 13:56:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-09 13:56:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2020-12-09 13:56:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-12-09 13:56:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2020-12-09 13:56:54,853 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2020-12-09 13:56:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:54,853 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2020-12-09 13:56:54,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:56:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2020-12-09 13:56:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 13:56:54,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:54,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:54,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 13:56:54,857 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2020-12-09 13:56:54,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:54,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660794921] [2020-12-09 13:56:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:54,947 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 13:56:54,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660794921] [2020-12-09 13:56:54,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:54,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:54,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252788518] [2020-12-09 13:56:54,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:54,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:54,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:54,950 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2020-12-09 13:56:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,036 INFO L93 Difference]: Finished difference Result 2413 states and 8471 transitions. [2020-12-09 13:56:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 13:56:55,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 13:56:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,049 INFO L225 Difference]: With dead ends: 2413 [2020-12-09 13:56:55,049 INFO L226 Difference]: Without dead ends: 1870 [2020-12-09 13:56:55,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2020-12-09 13:56:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1492. [2020-12-09 13:56:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-12-09 13:56:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5352 transitions. [2020-12-09 13:56:55,099 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5352 transitions. Word has length 12 [2020-12-09 13:56:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,099 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 5352 transitions. [2020-12-09 13:56:55,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5352 transitions. [2020-12-09 13:56:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 13:56:55,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 13:56:55,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash -832796680, now seen corresponding path program 1 times [2020-12-09 13:56:55,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692955509] [2020-12-09 13:56:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:55,161 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 13:56:55,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692955509] [2020-12-09 13:56:55,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:55,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:55,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801107196] [2020-12-09 13:56:55,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:55,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:55,163 INFO L87 Difference]: Start difference. First operand 1492 states and 5352 transitions. Second operand 5 states. [2020-12-09 13:56:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,195 INFO L93 Difference]: Finished difference Result 1618 states and 5634 transitions. [2020-12-09 13:56:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:56:55,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 13:56:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,204 INFO L225 Difference]: With dead ends: 1618 [2020-12-09 13:56:55,204 INFO L226 Difference]: Without dead ends: 1366 [2020-12-09 13:56:55,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-12-09 13:56:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2020-12-09 13:56:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-12-09 13:56:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4818 transitions. [2020-12-09 13:56:55,242 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4818 transitions. Word has length 12 [2020-12-09 13:56:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,243 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 4818 transitions. [2020-12-09 13:56:55,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4818 transitions. [2020-12-09 13:56:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 13:56:55,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 13:56:55,244 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash -105254130, now seen corresponding path program 1 times [2020-12-09 13:56:55,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296389041] [2020-12-09 13:56:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:55,313 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 13:56:55,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296389041] [2020-12-09 13:56:55,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:55,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:55,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194385474] [2020-12-09 13:56:55,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:55,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:55,315 INFO L87 Difference]: Start difference. First operand 1366 states and 4818 transitions. Second operand 5 states. [2020-12-09 13:56:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,356 INFO L93 Difference]: Finished difference Result 1456 states and 5010 transitions. [2020-12-09 13:56:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:56:55,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 13:56:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,367 INFO L225 Difference]: With dead ends: 1456 [2020-12-09 13:56:55,367 INFO L226 Difference]: Without dead ends: 1276 [2020-12-09 13:56:55,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-12-09 13:56:55,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1168. [2020-12-09 13:56:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-12-09 13:56:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 4059 transitions. [2020-12-09 13:56:55,411 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 4059 transitions. Word has length 13 [2020-12-09 13:56:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,412 INFO L481 AbstractCegarLoop]: Abstraction has 1168 states and 4059 transitions. [2020-12-09 13:56:55,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 4059 transitions. [2020-12-09 13:56:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 13:56:55,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 13:56:55,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,414 INFO L82 PathProgramCache]: Analyzing trace with hash -134657847, now seen corresponding path program 1 times [2020-12-09 13:56:55,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309978962] [2020-12-09 13:56:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:55,479 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 13:56:55,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309978962] [2020-12-09 13:56:55,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:55,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:55,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410321789] [2020-12-09 13:56:55,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:55,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:55,482 INFO L87 Difference]: Start difference. First operand 1168 states and 4059 transitions. Second operand 5 states. [2020-12-09 13:56:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,579 INFO L93 Difference]: Finished difference Result 1879 states and 6375 transitions. [2020-12-09 13:56:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 13:56:55,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 13:56:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,591 INFO L225 Difference]: With dead ends: 1879 [2020-12-09 13:56:55,591 INFO L226 Difference]: Without dead ends: 1438 [2020-12-09 13:56:55,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-12-09 13:56:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1114. [2020-12-09 13:56:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-12-09 13:56:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3834 transitions. [2020-12-09 13:56:55,624 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3834 transitions. Word has length 13 [2020-12-09 13:56:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,625 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 3834 transitions. [2020-12-09 13:56:55,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3834 transitions. [2020-12-09 13:56:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 13:56:55,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 13:56:55,627 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash 118994859, now seen corresponding path program 1 times [2020-12-09 13:56:55,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549454088] [2020-12-09 13:56:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:55,677 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 13:56:55,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549454088] [2020-12-09 13:56:55,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:55,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:55,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422143615] [2020-12-09 13:56:55,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:55,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:55,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:55,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:55,679 INFO L87 Difference]: Start difference. First operand 1114 states and 3834 transitions. Second operand 5 states. [2020-12-09 13:56:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,746 INFO L93 Difference]: Finished difference Result 1831 states and 6166 transitions. [2020-12-09 13:56:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 13:56:55,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 13:56:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,755 INFO L225 Difference]: With dead ends: 1831 [2020-12-09 13:56:55,755 INFO L226 Difference]: Without dead ends: 1480 [2020-12-09 13:56:55,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-12-09 13:56:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1102. [2020-12-09 13:56:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-12-09 13:56:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 3745 transitions. [2020-12-09 13:56:55,792 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 3745 transitions. Word has length 14 [2020-12-09 13:56:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,792 INFO L481 AbstractCegarLoop]: Abstraction has 1102 states and 3745 transitions. [2020-12-09 13:56:55,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 3745 transitions. [2020-12-09 13:56:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 13:56:55,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 13:56:55,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash 119501306, now seen corresponding path program 1 times [2020-12-09 13:56:55,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127079349] [2020-12-09 13:56:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:55,832 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 13:56:55,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127079349] [2020-12-09 13:56:55,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:55,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:55,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245739167] [2020-12-09 13:56:55,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:55,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:55,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:55,833 INFO L87 Difference]: Start difference. First operand 1102 states and 3745 transitions. Second operand 5 states. [2020-12-09 13:56:55,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,856 INFO L93 Difference]: Finished difference Result 1156 states and 3853 transitions. [2020-12-09 13:56:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:56:55,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 13:56:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,862 INFO L225 Difference]: With dead ends: 1156 [2020-12-09 13:56:55,862 INFO L226 Difference]: Without dead ends: 1048 [2020-12-09 13:56:55,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-12-09 13:56:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 940. [2020-12-09 13:56:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-12-09 13:56:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 3196 transitions. [2020-12-09 13:56:55,884 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 3196 transitions. Word has length 14 [2020-12-09 13:56:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,884 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 3196 transitions. [2020-12-09 13:56:55,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 3196 transitions. [2020-12-09 13:56:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 13:56:55,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 13:56:55,886 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,886 INFO L82 PathProgramCache]: Analyzing trace with hash -330143100, now seen corresponding path program 1 times [2020-12-09 13:56:55,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21339648] [2020-12-09 13:56:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:55,926 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 13:56:55,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21339648] [2020-12-09 13:56:55,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:55,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:56:55,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951169848] [2020-12-09 13:56:55,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:56:55,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:55,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:56:55,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:55,928 INFO L87 Difference]: Start difference. First operand 940 states and 3196 transitions. Second operand 6 states. [2020-12-09 13:56:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:55,966 INFO L93 Difference]: Finished difference Result 1189 states and 3968 transitions. [2020-12-09 13:56:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:56:55,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 13:56:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:55,971 INFO L225 Difference]: With dead ends: 1189 [2020-12-09 13:56:55,971 INFO L226 Difference]: Without dead ends: 544 [2020-12-09 13:56:55,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-12-09 13:56:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2020-12-09 13:56:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-12-09 13:56:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1746 transitions. [2020-12-09 13:56:55,988 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1746 transitions. Word has length 15 [2020-12-09 13:56:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:55,989 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 1746 transitions. [2020-12-09 13:56:55,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:56:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1746 transitions. [2020-12-09 13:56:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 13:56:55,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:55,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:55,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 13:56:55,990 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash -272320691, now seen corresponding path program 1 times [2020-12-09 13:56:55,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:55,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478941422] [2020-12-09 13:56:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:56,035 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 13:56:56,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478941422] [2020-12-09 13:56:56,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:56,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:56:56,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429845827] [2020-12-09 13:56:56,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:56:56,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:56,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:56:56,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:56,036 INFO L87 Difference]: Start difference. First operand 544 states and 1746 transitions. Second operand 6 states. [2020-12-09 13:56:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:56,074 INFO L93 Difference]: Finished difference Result 712 states and 2244 transitions. [2020-12-09 13:56:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:56:56,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 13:56:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:56,077 INFO L225 Difference]: With dead ends: 712 [2020-12-09 13:56:56,077 INFO L226 Difference]: Without dead ends: 316 [2020-12-09 13:56:56,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-09 13:56:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2020-12-09 13:56:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-09 13:56:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 934 transitions. [2020-12-09 13:56:56,085 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 934 transitions. Word has length 15 [2020-12-09 13:56:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:56,085 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 934 transitions. [2020-12-09 13:56:56,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:56:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 934 transitions. [2020-12-09 13:56:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 13:56:56,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:56,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:56,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 13:56:56,086 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2113265253, now seen corresponding path program 1 times [2020-12-09 13:56:56,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:56,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297987397] [2020-12-09 13:56:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:56,127 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 13:56:56,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297987397] [2020-12-09 13:56:56,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:56,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:56:56,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481507086] [2020-12-09 13:56:56,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:56:56,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:56,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:56:56,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:56:56,129 INFO L87 Difference]: Start difference. First operand 316 states and 934 transitions. Second operand 5 states. [2020-12-09 13:56:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:56,148 INFO L93 Difference]: Finished difference Result 340 states and 974 transitions. [2020-12-09 13:56:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:56:56,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 13:56:56,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:56,150 INFO L225 Difference]: With dead ends: 340 [2020-12-09 13:56:56,150 INFO L226 Difference]: Without dead ends: 292 [2020-12-09 13:56:56,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-09 13:56:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-12-09 13:56:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-12-09 13:56:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-12-09 13:56:56,158 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-12-09 13:56:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:56,158 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-12-09 13:56:56,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:56:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-12-09 13:56:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 13:56:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:56,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:56,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 13:56:56,160 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:56,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1420368766, now seen corresponding path program 1 times [2020-12-09 13:56:56,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:56,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724782658] [2020-12-09 13:56:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:56,212 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 13:56:56,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724782658] [2020-12-09 13:56:56,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:56,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:56:56,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645469917] [2020-12-09 13:56:56,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:56:56,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:56,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:56:56,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:56,214 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 6 states. [2020-12-09 13:56:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:56,248 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-12-09 13:56:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:56:56,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 13:56:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:56,249 INFO L225 Difference]: With dead ends: 352 [2020-12-09 13:56:56,249 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 13:56:56,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 13:56:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-12-09 13:56:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-09 13:56:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-12-09 13:56:56,252 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-12-09 13:56:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:56,252 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-12-09 13:56:56,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:56:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-12-09 13:56:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 13:56:56,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:56:56,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:56:56,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 13:56:56,253 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:56:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:56:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash -673573280, now seen corresponding path program 1 times [2020-12-09 13:56:56,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:56:56,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813744112] [2020-12-09 13:56:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:56:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:56:56,290 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 13:56:56,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813744112] [2020-12-09 13:56:56,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:56:56,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:56:56,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140371280] [2020-12-09 13:56:56,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:56:56,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:56:56,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:56:56,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:56:56,292 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 6 states. [2020-12-09 13:56:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:56:56,318 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-12-09 13:56:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:56:56,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 13:56:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:56:56,319 INFO L225 Difference]: With dead ends: 130 [2020-12-09 13:56:56,319 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 13:56:56,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:56:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 13:56:56,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 13:56:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 13:56:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 13:56:56,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 13:56:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:56:56,319 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 13:56:56,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:56:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 13:56:56,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 13:56:56,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 13:56:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:56:56 BasicIcfg [2020-12-09 13:56:56,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 13:56:56,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 13:56:56,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 13:56:56,322 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 13:56:56,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:56:51" (3/4) ... [2020-12-09 13:56:56,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 13:56:56,329 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 13:56:56,329 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 13:56:56,329 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 13:56:56,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-09 13:56:56,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 13:56:56,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 13:56:56,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:56:56,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:56:56,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14fac670-668e-43b0-9d4d-019e567a762e/bin/utaipan/witness.graphml [2020-12-09 13:56:56,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 13:56:56,361 INFO L168 Benchmark]: Toolchain (without parser) took 5392.75 ms. Allocated memory was 88.1 MB in the beginning and 192.9 MB in the end (delta: 104.9 MB). Free memory was 51.0 MB in the beginning and 69.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 86.8 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,361 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory was 68.6 MB in the beginning and 68.5 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:56:56,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.52 ms. Allocated memory is still 88.1 MB. Free memory was 50.8 MB in the beginning and 44.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.60 ms. Allocated memory is still 88.1 MB. Free memory was 44.1 MB in the beginning and 42.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,362 INFO L168 Benchmark]: Boogie Preprocessor took 18.89 ms. Allocated memory is still 88.1 MB. Free memory was 42.0 MB in the beginning and 40.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,363 INFO L168 Benchmark]: RCFGBuilder took 309.24 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 40.7 MB in the beginning and 66.8 MB in the end (delta: -26.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,363 INFO L168 Benchmark]: TraceAbstraction took 4629.20 ms. Allocated memory was 107.0 MB in the beginning and 192.9 MB in the end (delta: 86.0 MB). Free memory was 66.2 MB in the beginning and 71.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,364 INFO L168 Benchmark]: Witness Printer took 37.89 ms. Allocated memory is still 192.9 MB. Free memory was 71.3 MB in the beginning and 69.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:56:56,366 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 88.1 MB. Free memory was 68.6 MB in the beginning and 68.5 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.52 ms. Allocated memory is still 88.1 MB. Free memory was 50.8 MB in the beginning and 44.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.60 ms. Allocated memory is still 88.1 MB. Free memory was 44.1 MB in the beginning and 42.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.89 ms. Allocated memory is still 88.1 MB. Free memory was 42.0 MB in the beginning and 40.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 309.24 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 40.7 MB in the beginning and 66.8 MB in the end (delta: -26.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4629.20 ms. Allocated memory was 107.0 MB in the beginning and 192.9 MB in the end (delta: 86.0 MB). Free memory was 66.2 MB in the beginning and 71.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 16.1 GB. * Witness Printer took 37.89 ms. Allocated memory is still 192.9 MB. Free memory was 71.3 MB in the beginning and 69.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 102 PlacesBefore, 41 PlacesAfterwards, 91 TransitionsBefore, 29 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 4338 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 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 415 SDtfs, 584 SDslu, 732 SDs, 0 SdLazy, 165 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1492occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1296 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 12431 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...