./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/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 4d03eab5d7eb3076e43fdbc822f0c202dd7957a2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:31,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:31,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:31,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:31,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:31,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:31,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:31,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:31,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:31,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:31,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:31,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:31,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:31,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:31,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:31,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:31,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:31,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:31,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:31,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:31,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:31,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:31,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:31,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:31,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:31,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:31,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:31,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:31,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:31,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:31,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:31,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:31,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:31,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:31,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:31,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:31,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:31,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:31,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:31,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:31,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:31,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:31,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:31,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:31,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:31,347 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:31,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:31,347 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:31,348 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:31,348 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:31,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:31,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:31,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:31,349 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:31,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:31,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:31,350 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:31,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:31,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:31,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:31,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:31,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:31,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:31,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:31,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:31,354 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:31,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:31,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:31,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:31,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:31,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:31,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:31,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:31,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:31,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:31,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:31,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:31,358 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:31,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:31,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:31,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:31,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:31,359 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_a82a87b9-4ed8-4d09-96de-4093a36ac373/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d03eab5d7eb3076e43fdbc822f0c202dd7957a2 [2020-11-28 07:30:31,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:31,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:31,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:31,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:31,692 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:31,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i [2020-11-28 07:30:31,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/data/3fc223e33/5106a2c8700048d79dcfbe178fffd2aa/FLAGdd68e1842 [2020-11-28 07:30:32,389 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:32,390 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i [2020-11-28 07:30:32,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/data/3fc223e33/5106a2c8700048d79dcfbe178fffd2aa/FLAGdd68e1842 [2020-11-28 07:30:32,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/data/3fc223e33/5106a2c8700048d79dcfbe178fffd2aa [2020-11-28 07:30:32,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:32,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:32,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:32,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:32,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:32,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:32" (1/1) ... [2020-11-28 07:30:32,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bedca26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:32, skipping insertion in model container [2020-11-28 07:30:32,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:32" (1/1) ... [2020-11-28 07:30:32,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:32,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:33,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:33,149 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:33,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:33,297 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:33,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33 WrapperNode [2020-11-28 07:30:33,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:33,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:33,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:33,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:33,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:33,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:33,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:33,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:33,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... [2020-11-28 07:30:33,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:33,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:33,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:33,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:33,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/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 [2020-11-28 07:30:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:30:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:30:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:30:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 07:30:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 07:30:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 07:30:33,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 07:30:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:30:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:33,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:33,459 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:30:33,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:33,907 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:30:33,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:33 BoogieIcfgContainer [2020-11-28 07:30:33,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:33,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:33,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:33,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:33,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:32" (1/3) ... [2020-11-28 07:30:33,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f436279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:33, skipping insertion in model container [2020-11-28 07:30:33,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:33" (2/3) ... [2020-11-28 07:30:33,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f436279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:33, skipping insertion in model container [2020-11-28 07:30:33,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:33" (3/3) ... [2020-11-28 07:30:33,919 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.oepc.i [2020-11-28 07:30:33,930 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:30:33,930 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:33,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:33,935 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:30:33,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,960 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,960 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,962 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,972 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,972 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:33,976 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:30:33,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 07:30:34,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:34,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:34,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:34,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:34,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:34,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:34,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:34,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:34,034 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:30:34,037 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 07:30:34,040 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 07:30:34,041 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-28 07:30:34,081 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-28 07:30:34,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:30:34,085 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-28 07:30:34,088 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-28 07:30:35,514 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-28 07:30:35,798 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-28 07:30:36,190 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 07:30:36,299 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 07:30:36,336 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-11-28 07:30:36,336 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-28 07:30:36,344 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-28 07:30:36,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-28 07:30:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-28 07:30:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:30:36,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:36,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:30:36,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:36,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:36,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-11-28 07:30:36,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:36,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206239860] [2020-11-28 07:30:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:36,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206239860] [2020-11-28 07:30:36,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:36,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:36,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465428120] [2020-11-28 07:30:36,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:30:36,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:30:36,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:36,675 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-28 07:30:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:36,701 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-28 07:30:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:36,703 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 07:30:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:36,713 INFO L225 Difference]: With dead ends: 90 [2020-11-28 07:30:36,714 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 07:30:36,716 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 [2020-11-28 07:30:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 07:30:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 07:30:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 07:30:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-28 07:30:36,769 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-28 07:30:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:36,770 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-28 07:30:36,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:30:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-28 07:30:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:30:36,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:36,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:36,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:36,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-11-28 07:30:36,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:36,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80117780] [2020-11-28 07:30:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:36,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80117780] [2020-11-28 07:30:36,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:36,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:36,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361698165] [2020-11-28 07:30:36,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:30:36,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:36,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:30:36,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:30:36,943 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-28 07:30:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:36,981 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-11-28 07:30:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:30:36,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:30:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:36,984 INFO L225 Difference]: With dead ends: 82 [2020-11-28 07:30:36,985 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 07:30:36,985 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 [2020-11-28 07:30:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 07:30:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-28 07:30:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 07:30:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-11-28 07:30:37,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-11-28 07:30:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:37,004 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-11-28 07:30:37,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:30:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-11-28 07:30:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:30:37,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:37,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:37,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:30:37,006 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-11-28 07:30:37,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:37,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262174558] [2020-11-28 07:30:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:37,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262174558] [2020-11-28 07:30:37,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:37,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:30:37,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840650737] [2020-11-28 07:30:37,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:30:37,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:37,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:30:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:37,121 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 6 states. [2020-11-28 07:30:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:37,243 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-11-28 07:30:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:30:37,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 07:30:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:37,244 INFO L225 Difference]: With dead ends: 78 [2020-11-28 07:30:37,245 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 07:30:37,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:30:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 07:30:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 07:30:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:30:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-11-28 07:30:37,250 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-11-28 07:30:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:37,250 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-11-28 07:30:37,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:30:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-11-28 07:30:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:30:37,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:37,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:37,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:30:37,251 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-11-28 07:30:37,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:37,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603125642] [2020-11-28 07:30:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:37,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603125642] [2020-11-28 07:30:37,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:37,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:30:37,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143637790] [2020-11-28 07:30:37,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:30:37,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:37,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:30:37,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:37,352 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 6 states. [2020-11-28 07:30:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:37,466 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-11-28 07:30:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:30:37,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:30:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:37,467 INFO L225 Difference]: With dead ends: 36 [2020-11-28 07:30:37,467 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:30:37,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:30:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:30:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:30:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:30:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:30:37,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:30:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:37,468 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:30:37,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:30:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:30:37,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:30:37,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:30:37,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:37 BasicIcfg [2020-11-28 07:30:37,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:37,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:37,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:37,472 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:37,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:33" (3/4) ... [2020-11-28 07:30:37,479 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:30:37,485 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 07:30:37,486 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 07:30:37,492 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 07:30:37,493 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:30:37,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:30:37,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:30:37,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a82a87b9-4ed8-4d09-96de-4093a36ac373/bin/utaipan/witness.graphml [2020-11-28 07:30:37,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:37,552 INFO L168 Benchmark]: Toolchain (without parser) took 4886.65 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 60.0 MB in the beginning and 44.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:37,553 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:37,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.07 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 59.7 MB in the beginning and 69.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:37,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.95 ms. Allocated memory is still 113.2 MB. Free memory was 69.9 MB in the beginning and 68.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:37,555 INFO L168 Benchmark]: Boogie Preprocessor took 28.75 ms. Allocated memory is still 113.2 MB. Free memory was 68.5 MB in the beginning and 67.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:37,556 INFO L168 Benchmark]: RCFGBuilder took 526.05 ms. Allocated memory is still 113.2 MB. Free memory was 66.6 MB in the beginning and 46.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:37,556 INFO L168 Benchmark]: TraceAbstraction took 3560.59 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 46.9 MB in the beginning and 47.7 MB in the end (delta: -780.6 kB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:37,557 INFO L168 Benchmark]: Witness Printer took 78.61 ms. Allocated memory is still 136.3 MB. Free memory was 47.7 MB in the beginning and 44.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:37,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 631.07 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 59.7 MB in the beginning and 69.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.95 ms. Allocated memory is still 113.2 MB. Free memory was 69.9 MB in the beginning and 68.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.75 ms. Allocated memory is still 113.2 MB. Free memory was 68.5 MB in the beginning and 67.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 526.05 ms. Allocated memory is still 113.2 MB. Free memory was 66.6 MB in the beginning and 46.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3560.59 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 46.9 MB in the beginning and 47.7 MB in the end (delta: -780.6 kB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Witness Printer took 78.61 ms. Allocated memory is still 136.3 MB. Free memory was 47.7 MB in the beginning and 44.5 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 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 51 SDtfs, 76 SDslu, 69 SDs, 0 SdLazy, 65 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1063 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...