./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:08:02,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:08:02,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:08:02,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:08:02,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:08:02,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:08:02,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:08:02,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:08:02,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:08:02,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:08:02,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:08:02,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:08:02,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:08:02,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:08:02,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:08:02,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:08:02,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:08:02,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:08:02,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:08:02,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:08:02,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:08:02,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:08:02,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:08:02,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:08:02,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:08:02,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:08:02,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:08:02,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:08:02,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:08:02,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:08:02,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:08:02,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:08:02,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:08:02,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:08:02,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:08:02,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:08:02,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:08:02,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:08:02,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:08:02,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:08:02,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:08:02,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:08:02,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:08:02,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:08:02,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:08:02,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:08:02,419 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:08:02,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:08:02,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:08:02,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:08:02,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:08:02,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:08:02,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:08:02,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:08:02,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:08:02,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:08:02,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:08:02,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:08:02,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:08:02,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:08:02,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:08:02,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:08:02,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:08:02,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:08:02,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:08:02,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:08:02,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:08:02,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:08:02,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:08:02,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:08:02,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:08:02,425 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 [2020-12-02 12:08:02,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:08:02,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:08:02,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:08:02,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:08:02,915 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:08:02,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-12-02 12:08:03,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc628882/1da40df376484d38b784b04016d3d63c/FLAG5008e9f49 [2020-12-02 12:08:03,758 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:08:03,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-12-02 12:08:03,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc628882/1da40df376484d38b784b04016d3d63c/FLAG5008e9f49 [2020-12-02 12:08:03,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc628882/1da40df376484d38b784b04016d3d63c [2020-12-02 12:08:03,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:08:03,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:08:03,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:03,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:08:04,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:08:04,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:03" (1/1) ... [2020-12-02 12:08:04,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d13a7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04, skipping insertion in model container [2020-12-02 12:08:04,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:03" (1/1) ... [2020-12-02 12:08:04,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:08:04,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:08:04,304 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i[949,962] [2020-12-02 12:08:04,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:04,550 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:08:04,568 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i[949,962] [2020-12-02 12:08:04,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:04,735 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:08:04,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04 WrapperNode [2020-12-02 12:08:04,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:04,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:04,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:08:04,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:08:04,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:04,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:08:04,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:08:04,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:08:04,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... [2020-12-02 12:08:04,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:08:04,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:08:04,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:08:04,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:08:04,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 12:08:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:08:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:08:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:08:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:08:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:08:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:08:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:08:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:08:04,924 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:08:05,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:08:05,466 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:08:05,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:05 BoogieIcfgContainer [2020-12-02 12:08:05,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:08:05,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:08:05,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:08:05,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:08:05,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:08:03" (1/3) ... [2020-12-02 12:08:05,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28165afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:05, skipping insertion in model container [2020-12-02 12:08:05,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:04" (2/3) ... [2020-12-02 12:08:05,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28165afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:05, skipping insertion in model container [2020-12-02 12:08:05,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:05" (3/3) ... [2020-12-02 12:08:05,480 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-12-02 12:08:05,498 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:08:05,498 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:08:05,503 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:08:05,504 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:08:05,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,574 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,574 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,583 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,595 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,603 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:05,607 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:08:05,621 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:08:05,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:08:05,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:08:05,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:08:05,663 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:08:05,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:08:05,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:08:05,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:08:05,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:08:05,676 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:08:05,679 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:08:05,682 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:08:05,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:08:05,727 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:08:05,728 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:08:05,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:08:05,735 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:08:08,931 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:08:09,035 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 12:08:09,279 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:08:09,380 INFO L131 LiptonReduction]: Checked pairs total: 2771 [2020-12-02 12:08:09,381 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-02 12:08:09,387 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:08:09,419 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:08:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:08:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:08:09,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:09,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:09,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash -895973629, now seen corresponding path program 1 times [2020-12-02 12:08:09,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:09,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056465637] [2020-12-02 12:08:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:09,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056465637] [2020-12-02 12:08:09,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:09,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:09,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516337970] [2020-12-02 12:08:09,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:08:09,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:08:09,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:08:09,675 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:08:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:09,713 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:08:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:08:09,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:08:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:09,749 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:08:09,749 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:08:09,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:08:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:08:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:08:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:08:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:08:09,872 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:08:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:09,873 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:08:09,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:08:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:08:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:08:09,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:09,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:09,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:08:09,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:09,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2005427324, now seen corresponding path program 1 times [2020-12-02 12:08:09,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:09,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082154248] [2020-12-02 12:08:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:10,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082154248] [2020-12-02 12:08:10,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:10,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:10,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616281414] [2020-12-02 12:08:10,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:10,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:10,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:10,120 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:08:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:10,205 INFO L93 Difference]: Finished difference Result 474 states and 1284 transitions. [2020-12-02 12:08:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:10,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:08:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:10,214 INFO L225 Difference]: With dead ends: 474 [2020-12-02 12:08:10,214 INFO L226 Difference]: Without dead ends: 354 [2020-12-02 12:08:10,216 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 [2020-12-02 12:08:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-02 12:08:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 306. [2020-12-02 12:08:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-12-02 12:08:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 854 transitions. [2020-12-02 12:08:10,266 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 854 transitions. Word has length 9 [2020-12-02 12:08:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:10,266 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 854 transitions. [2020-12-02 12:08:10,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 854 transitions. [2020-12-02 12:08:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:10,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:10,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:10,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:08:10,272 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1664929715, now seen corresponding path program 1 times [2020-12-02 12:08:10,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:10,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221278871] [2020-12-02 12:08:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:10,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221278871] [2020-12-02 12:08:10,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:10,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:10,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521401046] [2020-12-02 12:08:10,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:10,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:10,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:10,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:10,396 INFO L87 Difference]: Start difference. First operand 306 states and 854 transitions. Second operand 4 states. [2020-12-02 12:08:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:10,423 INFO L93 Difference]: Finished difference Result 330 states and 888 transitions. [2020-12-02 12:08:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:10,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:08:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:10,426 INFO L225 Difference]: With dead ends: 330 [2020-12-02 12:08:10,426 INFO L226 Difference]: Without dead ends: 282 [2020-12-02 12:08:10,427 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 [2020-12-02 12:08:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-02 12:08:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-02 12:08:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-02 12:08:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 772 transitions. [2020-12-02 12:08:10,439 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 772 transitions. Word has length 10 [2020-12-02 12:08:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:10,440 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 772 transitions. [2020-12-02 12:08:10,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 772 transitions. [2020-12-02 12:08:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:10,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:10,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:10,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:08:10,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2038728515, now seen corresponding path program 1 times [2020-12-02 12:08:10,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:10,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126470676] [2020-12-02 12:08:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:10,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126470676] [2020-12-02 12:08:10,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:10,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:10,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651346787] [2020-12-02 12:08:10,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:10,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:10,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:10,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:10,513 INFO L87 Difference]: Start difference. First operand 282 states and 772 transitions. Second operand 5 states. [2020-12-02 12:08:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:10,576 INFO L93 Difference]: Finished difference Result 378 states and 968 transitions. [2020-12-02 12:08:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:10,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:08:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:10,579 INFO L225 Difference]: With dead ends: 378 [2020-12-02 12:08:10,579 INFO L226 Difference]: Without dead ends: 306 [2020-12-02 12:08:10,580 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 [2020-12-02 12:08:10,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-12-02 12:08:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 258. [2020-12-02 12:08:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-02 12:08:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 698 transitions. [2020-12-02 12:08:10,590 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 698 transitions. Word has length 10 [2020-12-02 12:08:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:10,591 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 698 transitions. [2020-12-02 12:08:10,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 698 transitions. [2020-12-02 12:08:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:08:10,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:10,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:10,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:08:10,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:10,594 INFO L82 PathProgramCache]: Analyzing trace with hash 73189998, now seen corresponding path program 1 times [2020-12-02 12:08:10,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:10,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570596456] [2020-12-02 12:08:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:10,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570596456] [2020-12-02 12:08:10,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:10,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:10,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141772080] [2020-12-02 12:08:10,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:10,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:10,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:10,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:10,657 INFO L87 Difference]: Start difference. First operand 258 states and 698 transitions. Second operand 5 states. [2020-12-02 12:08:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:10,717 INFO L93 Difference]: Finished difference Result 314 states and 817 transitions. [2020-12-02 12:08:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:10,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:08:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:10,719 INFO L225 Difference]: With dead ends: 314 [2020-12-02 12:08:10,719 INFO L226 Difference]: Without dead ends: 166 [2020-12-02 12:08:10,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:08:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-02 12:08:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-12-02 12:08:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-02 12:08:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 406 transitions. [2020-12-02 12:08:10,733 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 406 transitions. Word has length 11 [2020-12-02 12:08:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:10,733 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 406 transitions. [2020-12-02 12:08:10,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 406 transitions. [2020-12-02 12:08:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:08:10,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:10,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:10,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:08:10,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:10,737 INFO L82 PathProgramCache]: Analyzing trace with hash -803726118, now seen corresponding path program 1 times [2020-12-02 12:08:10,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:10,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063673465] [2020-12-02 12:08:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:10,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063673465] [2020-12-02 12:08:10,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:10,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:10,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964823910] [2020-12-02 12:08:10,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:10,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:10,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:10,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:10,830 INFO L87 Difference]: Start difference. First operand 166 states and 406 transitions. Second operand 4 states. [2020-12-02 12:08:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:10,859 INFO L93 Difference]: Finished difference Result 186 states and 415 transitions. [2020-12-02 12:08:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:10,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:08:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:10,861 INFO L225 Difference]: With dead ends: 186 [2020-12-02 12:08:10,861 INFO L226 Difference]: Without dead ends: 142 [2020-12-02 12:08:10,862 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 [2020-12-02 12:08:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-02 12:08:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-12-02 12:08:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-02 12:08:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 317 transitions. [2020-12-02 12:08:10,868 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 317 transitions. Word has length 13 [2020-12-02 12:08:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:10,869 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 317 transitions. [2020-12-02 12:08:10,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 317 transitions. [2020-12-02 12:08:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:08:10,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:10,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:10,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:08:10,870 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:10,871 INFO L82 PathProgramCache]: Analyzing trace with hash -485202570, now seen corresponding path program 1 times [2020-12-02 12:08:10,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:10,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145960080] [2020-12-02 12:08:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:10,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145960080] [2020-12-02 12:08:10,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:10,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:10,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168701867] [2020-12-02 12:08:10,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:10,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:10,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:10,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:10,931 INFO L87 Difference]: Start difference. First operand 142 states and 317 transitions. Second operand 5 states. [2020-12-02 12:08:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:10,970 INFO L93 Difference]: Finished difference Result 135 states and 276 transitions. [2020-12-02 12:08:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:10,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:08:10,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:10,972 INFO L225 Difference]: With dead ends: 135 [2020-12-02 12:08:10,973 INFO L226 Difference]: Without dead ends: 107 [2020-12-02 12:08:10,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:10,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-02 12:08:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-02 12:08:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-02 12:08:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 216 transitions. [2020-12-02 12:08:10,978 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 216 transitions. Word has length 14 [2020-12-02 12:08:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:10,978 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 216 transitions. [2020-12-02 12:08:10,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 216 transitions. [2020-12-02 12:08:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:08:10,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:10,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:10,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:08:10,980 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1951668266, now seen corresponding path program 1 times [2020-12-02 12:08:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:10,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448695487] [2020-12-02 12:08:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:11,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448695487] [2020-12-02 12:08:11,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:11,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:11,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653792312] [2020-12-02 12:08:11,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:11,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:11,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:11,042 INFO L87 Difference]: Start difference. First operand 107 states and 216 transitions. Second operand 5 states. [2020-12-02 12:08:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:11,096 INFO L93 Difference]: Finished difference Result 134 states and 262 transitions. [2020-12-02 12:08:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:11,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 12:08:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:11,097 INFO L225 Difference]: With dead ends: 134 [2020-12-02 12:08:11,098 INFO L226 Difference]: Without dead ends: 105 [2020-12-02 12:08:11,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-02 12:08:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2020-12-02 12:08:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-02 12:08:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 166 transitions. [2020-12-02 12:08:11,102 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 166 transitions. Word has length 16 [2020-12-02 12:08:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:11,102 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 166 transitions. [2020-12-02 12:08:11,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-12-02 12:08:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:08:11,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:11,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:11,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:08:11,104 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:11,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1052233970, now seen corresponding path program 2 times [2020-12-02 12:08:11,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:11,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510489887] [2020-12-02 12:08:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:11,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510489887] [2020-12-02 12:08:11,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:11,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:08:11,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989805160] [2020-12-02 12:08:11,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:11,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:11,168 INFO L87 Difference]: Start difference. First operand 86 states and 166 transitions. Second operand 6 states. [2020-12-02 12:08:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:11,241 INFO L93 Difference]: Finished difference Result 115 states and 214 transitions. [2020-12-02 12:08:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:11,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:08:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:11,243 INFO L225 Difference]: With dead ends: 115 [2020-12-02 12:08:11,243 INFO L226 Difference]: Without dead ends: 79 [2020-12-02 12:08:11,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:08:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-02 12:08:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-12-02 12:08:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-02 12:08:11,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-12-02 12:08:11,247 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-12-02 12:08:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:11,247 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-12-02 12:08:11,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-12-02 12:08:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:08:11,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:11,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:11,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:08:11,248 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:11,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1712735852, now seen corresponding path program 1 times [2020-12-02 12:08:11,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:11,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221443963] [2020-12-02 12:08:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:11,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221443963] [2020-12-02 12:08:11,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:11,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:08:11,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823180750] [2020-12-02 12:08:11,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:11,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:11,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:11,357 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 6 states. [2020-12-02 12:08:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:11,402 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-12-02 12:08:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:11,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:08:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:11,403 INFO L225 Difference]: With dead ends: 67 [2020-12-02 12:08:11,403 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:08:11,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:08:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:08:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:08:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:08:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:08:11,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:08:11,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:11,405 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:08:11,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:08:11,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:08:11,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:08:11,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:08:11 BasicIcfg [2020-12-02 12:08:11,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:08:11,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:08:11,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:08:11,410 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:08:11,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:05" (3/4) ... [2020-12-02 12:08:11,415 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:08:11,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:08:11,424 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:08:11,424 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:08:11,431 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:08:11,431 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:08:11,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:11,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:11,509 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:08:11,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:08:11,515 INFO L168 Benchmark]: Toolchain (without parser) took 7522.05 ms. Allocated memory was 48.2 MB in the beginning and 134.2 MB in the end (delta: 86.0 MB). Free memory was 23.7 MB in the beginning and 90.0 MB in the end (delta: -66.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:11,516 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory was 31.7 MB in the beginning and 31.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:11,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.02 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 36.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:11,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.57 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 34.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:11,520 INFO L168 Benchmark]: Boogie Preprocessor took 28.54 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 33.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:11,520 INFO L168 Benchmark]: RCFGBuilder took 651.65 ms. Allocated memory is still 58.7 MB. Free memory was 33.3 MB in the beginning and 25.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:11,523 INFO L168 Benchmark]: TraceAbstraction took 5938.48 ms. Allocated memory was 58.7 MB in the beginning and 134.2 MB in the end (delta: 75.5 MB). Free memory was 24.8 MB in the beginning and 93.1 MB in the end (delta: -68.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:11,524 INFO L168 Benchmark]: Witness Printer took 103.35 ms. Allocated memory is still 134.2 MB. Free memory was 93.1 MB in the beginning and 90.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:11,526 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 48.2 MB. Free memory was 31.7 MB in the beginning and 31.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.02 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 36.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.57 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 34.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.54 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 33.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 651.65 ms. Allocated memory is still 58.7 MB. Free memory was 33.3 MB in the beginning and 25.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5938.48 ms. Allocated memory was 58.7 MB in the beginning and 134.2 MB in the end (delta: 75.5 MB). Free memory was 24.8 MB in the beginning and 93.1 MB in the end (delta: -68.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 103.35 ms. Allocated memory is still 134.2 MB. Free memory was 93.1 MB in the beginning and 90.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 849 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 88 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2771 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 223 SDtfs, 294 SDslu, 343 SDs, 0 SdLazy, 114 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 5399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...