./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72b5cfc065b99dee03c9feb5080303d7e06155db ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:23:34,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:23:34,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:23:34,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:23:34,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:23:34,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:23:34,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:23:34,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:23:34,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:23:34,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:23:34,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:23:34,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:23:34,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:23:34,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:23:34,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:23:34,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:23:34,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:23:34,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:23:34,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:23:34,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:23:34,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:23:34,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:23:34,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:23:34,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:23:34,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:23:34,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:23:34,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:23:34,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:23:34,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:23:34,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:23:34,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:23:34,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:23:34,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:23:34,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:23:34,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:23:34,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:23:34,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:23:34,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:23:34,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:23:34,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:23:34,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:23:34,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:23:34,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:23:34,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:23:34,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:23:34,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:23:34,411 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:23:34,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:23:34,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:23:34,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:23:34,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:23:34,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:23:34,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:23:34,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:23:34,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:23:34,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:23:34,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:23:34,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:23:34,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:23:34,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:23:34,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:23:34,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:23:34,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:23:34,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:23:34,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:23:34,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:23:34,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:23:34,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:23:34,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:23:34,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:23:34,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:23:34,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72b5cfc065b99dee03c9feb5080303d7e06155db [2020-12-01 15:23:34,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:23:34,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:23:34,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:23:34,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:23:34,703 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:23:34,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-12-01 15:23:34,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/data/e07a2c5b4/14f20f9ade364b919c1dd388094c9fb1/FLAG31938960d [2020-12-01 15:23:35,377 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:23:35,383 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-12-01 15:23:35,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/data/e07a2c5b4/14f20f9ade364b919c1dd388094c9fb1/FLAG31938960d [2020-12-01 15:23:35,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/data/e07a2c5b4/14f20f9ade364b919c1dd388094c9fb1 [2020-12-01 15:23:35,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:23:35,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:23:35,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:23:35,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:23:35,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:23:35,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:23:35" (1/1) ... [2020-12-01 15:23:35,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c58ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:35, skipping insertion in model container [2020-12-01 15:23:35,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:23:35" (1/1) ... [2020-12-01 15:23:35,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:23:35,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:23:36,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:23:36,135 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:23:36,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:23:36,306 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:23:36,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36 WrapperNode [2020-12-01 15:23:36,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:23:36,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:23:36,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:23:36,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:23:36,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:23:36,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:23:36,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:23:36,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:23:36,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... [2020-12-01 15:23:36,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:23:36,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:23:36,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:23:36,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:23:36,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/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 [2020-12-01 15:23:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:23:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:23:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:23:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:23:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:23:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:23:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:23:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:23:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:23:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:23:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:23:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:23:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:23:36,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:23:36,510 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:23:36,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:23:36,906 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:23:36,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:23:36 BoogieIcfgContainer [2020-12-01 15:23:36,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:23:36,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:23:36,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:23:36,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:23:36,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:23:35" (1/3) ... [2020-12-01 15:23:36,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49356bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:23:36, skipping insertion in model container [2020-12-01 15:23:36,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:23:36" (2/3) ... [2020-12-01 15:23:36,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49356bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:23:36, skipping insertion in model container [2020-12-01 15:23:36,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:23:36" (3/3) ... [2020-12-01 15:23:36,917 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-12-01 15:23:36,932 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:23:36,932 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:23:36,936 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:23:36,940 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:23:36,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,974 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,974 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,977 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,977 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,978 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,978 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,978 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,978 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,979 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,980 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,980 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,980 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,980 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,980 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,980 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,981 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,985 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,989 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,989 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:23:36,994 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:23:37,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:23:37,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:23:37,056 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:23:37,056 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:23:37,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:23:37,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:23:37,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:23:37,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:23:37,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:23:37,069 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:23:37,071 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-12-01 15:23:37,074 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-12-01 15:23:37,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-12-01 15:23:37,121 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-12-01 15:23:37,121 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:23:37,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:23:37,128 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:23:40,018 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-01 15:23:40,267 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-01 15:23:40,380 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-01 15:23:40,565 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-01 15:23:41,145 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-01 15:23:41,439 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-12-01 15:23:41,439 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-12-01 15:23:41,446 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-01 15:23:41,471 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-01 15:23:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-01 15:23:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:23:41,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:41,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:41,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:41,500 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-12-01 15:23:41,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:41,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001082425] [2020-12-01 15:23:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:41,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001082425] [2020-12-01 15:23:41,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:41,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:23:41,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812978566] [2020-12-01 15:23:41,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:23:41,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:41,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:23:41,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:41,856 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-01 15:23:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:41,924 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-12-01 15:23:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:23:41,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-01 15:23:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:41,948 INFO L225 Difference]: With dead ends: 290 [2020-12-01 15:23:41,948 INFO L226 Difference]: Without dead ends: 226 [2020-12-01 15:23:41,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-01 15:23:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-01 15:23:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-01 15:23:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-12-01 15:23:42,050 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-12-01 15:23:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,051 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-12-01 15:23:42,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:23:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-12-01 15:23:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:23:42,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:23:42,056 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash 403368074, now seen corresponding path program 1 times [2020-12-01 15:23:42,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451061900] [2020-12-01 15:23:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451061900] [2020-12-01 15:23:42,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:23:42,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627682309] [2020-12-01 15:23:42,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:23:42,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:23:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:42,178 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-12-01 15:23:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:42,189 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-12-01 15:23:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:23:42,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-01 15:23:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:42,194 INFO L225 Difference]: With dead ends: 198 [2020-12-01 15:23:42,195 INFO L226 Difference]: Without dead ends: 198 [2020-12-01 15:23:42,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-01 15:23:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-12-01 15:23:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-01 15:23:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-12-01 15:23:42,217 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 9 [2020-12-01 15:23:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,217 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-12-01 15:23:42,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:23:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-12-01 15:23:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:23:42,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:23:42,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,220 INFO L82 PathProgramCache]: Analyzing trace with hash 159818941, now seen corresponding path program 1 times [2020-12-01 15:23:42,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458470020] [2020-12-01 15:23:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458470020] [2020-12-01 15:23:42,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:23:42,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352010341] [2020-12-01 15:23:42,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:23:42,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:23:42,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:42,331 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-12-01 15:23:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:42,360 INFO L93 Difference]: Finished difference Result 264 states and 697 transitions. [2020-12-01 15:23:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:23:42,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-01 15:23:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:42,363 INFO L225 Difference]: With dead ends: 264 [2020-12-01 15:23:42,363 INFO L226 Difference]: Without dead ends: 168 [2020-12-01 15:23:42,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-01 15:23:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-12-01 15:23:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-01 15:23:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 433 transitions. [2020-12-01 15:23:42,383 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 433 transitions. Word has length 11 [2020-12-01 15:23:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,383 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 433 transitions. [2020-12-01 15:23:42,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:23:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 433 transitions. [2020-12-01 15:23:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:23:42,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:23:42,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,393 INFO L82 PathProgramCache]: Analyzing trace with hash 658800567, now seen corresponding path program 1 times [2020-12-01 15:23:42,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615498950] [2020-12-01 15:23:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615498950] [2020-12-01 15:23:42,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:23:42,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806803369] [2020-12-01 15:23:42,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:23:42,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:23:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:23:42,471 INFO L87 Difference]: Start difference. First operand 168 states and 433 transitions. Second operand 4 states. [2020-12-01 15:23:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:42,492 INFO L93 Difference]: Finished difference Result 216 states and 549 transitions. [2020-12-01 15:23:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:23:42,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:23:42,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:42,494 INFO L225 Difference]: With dead ends: 216 [2020-12-01 15:23:42,495 INFO L226 Difference]: Without dead ends: 144 [2020-12-01 15:23:42,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:23:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-01 15:23:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-12-01 15:23:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-01 15:23:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-12-01 15:23:42,503 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 12 [2020-12-01 15:23:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,503 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-12-01 15:23:42,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:23:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-12-01 15:23:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:23:42,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:23:42,504 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 2 times [2020-12-01 15:23:42,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107873665] [2020-12-01 15:23:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107873665] [2020-12-01 15:23:42,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:23:42,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158314468] [2020-12-01 15:23:42,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:23:42,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:23:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:23:42,606 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-12-01 15:23:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:42,632 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-12-01 15:23:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:23:42,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:23:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:42,636 INFO L225 Difference]: With dead ends: 164 [2020-12-01 15:23:42,636 INFO L226 Difference]: Without dead ends: 124 [2020-12-01 15:23:42,637 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 [2020-12-01 15:23:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-01 15:23:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-01 15:23:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-01 15:23:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-12-01 15:23:42,650 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-12-01 15:23:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,651 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-12-01 15:23:42,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:23:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-12-01 15:23:42,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:23:42,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:23:42,654 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1069248817, now seen corresponding path program 1 times [2020-12-01 15:23:42,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988305] [2020-12-01 15:23:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988305] [2020-12-01 15:23:42,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:23:42,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683303192] [2020-12-01 15:23:42,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:23:42,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:23:42,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:23:42,752 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-12-01 15:23:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:42,797 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-12-01 15:23:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:23:42,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:23:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:42,799 INFO L225 Difference]: With dead ends: 122 [2020-12-01 15:23:42,799 INFO L226 Difference]: Without dead ends: 97 [2020-12-01 15:23:42,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:23:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-01 15:23:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-01 15:23:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-01 15:23:42,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-12-01 15:23:42,803 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-12-01 15:23:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,804 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-12-01 15:23:42,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:23:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-12-01 15:23:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:23:42,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:23:42,806 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-12-01 15:23:42,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815522005] [2020-12-01 15:23:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815522005] [2020-12-01 15:23:42,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:23:42,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106622866] [2020-12-01 15:23:42,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:23:42,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:23:42,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:42,850 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-12-01 15:23:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:42,859 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-12-01 15:23:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:23:42,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-01 15:23:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:42,860 INFO L225 Difference]: With dead ends: 115 [2020-12-01 15:23:42,861 INFO L226 Difference]: Without dead ends: 98 [2020-12-01 15:23:42,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:23:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-01 15:23:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-01 15:23:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-01 15:23:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-12-01 15:23:42,866 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-12-01 15:23:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:42,866 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-12-01 15:23:42,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:23:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-12-01 15:23:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:23:42,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:42,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:42,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:23:42,868 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-12-01 15:23:42,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:42,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606370283] [2020-12-01 15:23:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:42,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606370283] [2020-12-01 15:23:42,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:42,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:23:42,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876938694] [2020-12-01 15:23:42,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:23:42,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:42,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:23:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:23:42,960 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-12-01 15:23:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:43,015 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-12-01 15:23:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:23:43,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 15:23:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:43,017 INFO L225 Difference]: With dead ends: 92 [2020-12-01 15:23:43,017 INFO L226 Difference]: Without dead ends: 36 [2020-12-01 15:23:43,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:23:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-01 15:23:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-01 15:23:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-01 15:23:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-12-01 15:23:43,019 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-12-01 15:23:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:43,019 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-12-01 15:23:43,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:23:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-12-01 15:23:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:23:43,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:23:43,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:23:43,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:23:43,021 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:23:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:23:43,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-12-01 15:23:43,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:23:43,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084847810] [2020-12-01 15:23:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:23:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:23:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:23:43,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084847810] [2020-12-01 15:23:43,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:23:43,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:23:43,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455331107] [2020-12-01 15:23:43,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:23:43,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:23:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:23:43,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:23:43,051 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-12-01 15:23:43,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:23:43,063 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-12-01 15:23:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:23:43,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:23:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:23:43,064 INFO L225 Difference]: With dead ends: 35 [2020-12-01 15:23:43,064 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:23:43,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:23:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:23:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:23:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:23:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:23:43,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-01 15:23:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:23:43,066 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:23:43,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:23:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:23:43,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:23:43,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:23:43,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:23:43 BasicIcfg [2020-12-01 15:23:43,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:23:43,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:23:43,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:23:43,070 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:23:43,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:23:36" (3/4) ... [2020-12-01 15:23:43,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:23:43,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:23:43,080 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:23:43,080 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:23:43,084 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:23:43,085 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:23:43,085 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:23:43,085 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:23:43,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_685d9757-eabb-4005-8e52-217243f68872/bin/uautomizer/witness.graphml [2020-12-01 15:23:43,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:23:43,142 INFO L168 Benchmark]: Toolchain (without parser) took 7490.95 ms. Allocated memory was 98.6 MB in the beginning and 169.9 MB in the end (delta: 71.3 MB). Free memory was 70.2 MB in the beginning and 62.7 MB in the end (delta: 7.5 MB). Peak memory consumption was 79.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:23:43,143 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 41.9 MB in the beginning and 41.9 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:23:43,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.83 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 72.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:23:43,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 70.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:23:43,144 INFO L168 Benchmark]: Boogie Preprocessor took 60.95 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:23:43,144 INFO L168 Benchmark]: RCFGBuilder took 497.15 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 47.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:23:43,144 INFO L168 Benchmark]: TraceAbstraction took 6158.95 ms. Allocated memory was 98.6 MB in the beginning and 169.9 MB in the end (delta: 71.3 MB). Free memory was 47.6 MB in the beginning and 65.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:23:43,145 INFO L168 Benchmark]: Witness Printer took 71.75 ms. Allocated memory is still 169.9 MB. Free memory was 65.8 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:23:43,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 41.9 MB in the beginning and 41.9 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 655.83 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 72.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 70.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.95 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 497.15 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 47.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6158.95 ms. Allocated memory was 98.6 MB in the beginning and 169.9 MB in the end (delta: 71.3 MB). Free memory was 47.6 MB in the beginning and 65.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 16.1 GB. * Witness Printer took 71.75 ms. Allocated memory is still 169.9 MB. Free memory was 65.8 MB in the beginning and 62.7 MB in the end (delta: 3.1 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 980 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 162 SDtfs, 168 SDslu, 155 SDs, 0 SdLazy, 78 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 2868 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...