./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.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/safe020_tso.oepc.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 538cc2603fc8a261463ba2a472beab37ff2c86c6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:09:55,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:09:55,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:09:55,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:09:55,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:09:55,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:09:55,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:09:55,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:09:55,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:09:55,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:09:55,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:09:55,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:09:55,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:09:55,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:09:55,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:09:55,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:09:55,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:09:55,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:09:55,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:09:55,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:09:55,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:09:55,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:09:55,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:09:55,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:09:55,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:09:55,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:09:55,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:09:55,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:09:55,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:09:55,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:09:55,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:09:55,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:09:55,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:09:55,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:09:55,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:09:55,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:09:55,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:09:55,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:09:55,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:09:55,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:09:55,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:09:55,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:09:55,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:09:55,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:09:55,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:09:55,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:09:55,317 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:09:55,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:09:55,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:09:55,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:09:55,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:09:55,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:09:55,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:09:55,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:09:55,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:09:55,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:09:55,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:09:55,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:09:55,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:09:55,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:09:55,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:09:55,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:09:55,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:09:55,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:09:55,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:09:55,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:09:55,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:09:55,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:09:55,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:09:55,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:09:55,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:09:55,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 538cc2603fc8a261463ba2a472beab37ff2c86c6 [2020-12-02 12:09:55,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:09:55,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:09:55,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:09:55,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:09:55,803 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:09:55,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-12-02 12:09:55,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dac74258/cc578add68be4026883b9cf26d7e827f/FLAGec460d517 [2020-12-02 12:09:56,688 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:09:56,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-12-02 12:09:56,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dac74258/cc578add68be4026883b9cf26d7e827f/FLAGec460d517 [2020-12-02 12:09:56,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dac74258/cc578add68be4026883b9cf26d7e827f [2020-12-02 12:09:56,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:09:56,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:09:56,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:56,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:09:56,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:09:56,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:56" (1/1) ... [2020-12-02 12:09:56,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d438aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:56, skipping insertion in model container [2020-12-02 12:09:56,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:56" (1/1) ... [2020-12-02 12:09:56,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:09:57,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:09:57,257 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/safe020_tso.oepc.i[950,963] [2020-12-02 12:09:57,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:57,440 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:09:57,457 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/safe020_tso.oepc.i[950,963] [2020-12-02 12:09:57,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:57,662 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:09:57,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57 WrapperNode [2020-12-02 12:09:57,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:57,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:57,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:09:57,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:09:57,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:57,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:09:57,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:09:57,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:09:57,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (1/1) ... [2020-12-02 12:09:57,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:09:57,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:09:57,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:09:57,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:09:57,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (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 12:09:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:09:57,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:09:57,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:09:57,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:09:57,881 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:09:57,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:09:57,882 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:09:57,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:09:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:09:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:09:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:09:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:09:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:09:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:09:57,886 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 12:09:58,446 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:09:58,447 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:09:58,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:58 BoogieIcfgContainer [2020-12-02 12:09:58,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:09:58,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:09:58,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:09:58,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:09:58,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:09:56" (1/3) ... [2020-12-02 12:09:58,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eea46a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:58, skipping insertion in model container [2020-12-02 12:09:58,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:57" (2/3) ... [2020-12-02 12:09:58,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eea46a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:58, skipping insertion in model container [2020-12-02 12:09:58,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:58" (3/3) ... [2020-12-02 12:09:58,467 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-12-02 12:09:58,486 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:09:58,486 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:09:58,498 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:09:58,499 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:09:58,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,543 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,546 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,547 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,547 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,550 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,550 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,550 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,551 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,551 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,563 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:58,571 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:09:58,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:09:58,616 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:09:58,616 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:09:58,616 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:09:58,616 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:09:58,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:09:58,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:09:58,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:09:58,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:09:58,636 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:09:58,639 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:09:58,643 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:09:58,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-02 12:09:58,706 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-02 12:09:58,707 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:09:58,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-02 12:09:58,731 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-02 12:10:02,119 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:10:02,440 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:10:02,698 INFO L131 LiptonReduction]: Checked pairs total: 2226 [2020-12-02 12:10:02,699 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-02 12:10:02,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-02 12:10:02,732 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-02 12:10:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-02 12:10:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:10:02,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:02,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:02,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:02,749 INFO L82 PathProgramCache]: Analyzing trace with hash -938351108, now seen corresponding path program 1 times [2020-12-02 12:10:02,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:02,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488937434] [2020-12-02 12:10:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:03,111 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 12:10:03,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488937434] [2020-12-02 12:10:03,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:03,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:10:03,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572952685] [2020-12-02 12:10:03,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:10:03,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:03,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:10:03,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:10:03,149 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-02 12:10:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:03,238 INFO L93 Difference]: Finished difference Result 316 states and 835 transitions. [2020-12-02 12:10:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:10:03,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:10:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:03,268 INFO L225 Difference]: With dead ends: 316 [2020-12-02 12:10:03,269 INFO L226 Difference]: Without dead ends: 205 [2020-12-02 12:10:03,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:10:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-02 12:10:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2020-12-02 12:10:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-02 12:10:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 485 transitions. [2020-12-02 12:10:03,385 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 485 transitions. Word has length 8 [2020-12-02 12:10:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:03,386 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 485 transitions. [2020-12-02 12:10:03,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:10:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 485 transitions. [2020-12-02 12:10:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:10:03,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:03,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:03,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:10:03,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash 395784729, now seen corresponding path program 1 times [2020-12-02 12:10:03,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:03,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324060309] [2020-12-02 12:10:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:03,548 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 12:10:03,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324060309] [2020-12-02 12:10:03,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:03,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:03,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559785125] [2020-12-02 12:10:03,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:03,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:03,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:03,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:03,553 INFO L87 Difference]: Start difference. First operand 187 states and 485 transitions. Second operand 4 states. [2020-12-02 12:10:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:03,577 INFO L93 Difference]: Finished difference Result 196 states and 488 transitions. [2020-12-02 12:10:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:03,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:10:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:03,580 INFO L225 Difference]: With dead ends: 196 [2020-12-02 12:10:03,580 INFO L226 Difference]: Without dead ends: 196 [2020-12-02 12:10:03,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-02 12:10:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2020-12-02 12:10:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-02 12:10:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 455 transitions. [2020-12-02 12:10:03,596 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 455 transitions. Word has length 9 [2020-12-02 12:10:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:03,596 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 455 transitions. [2020-12-02 12:10:03,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 455 transitions. [2020-12-02 12:10:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:10:03,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:03,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:03,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:10:03,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:03,599 INFO L82 PathProgramCache]: Analyzing trace with hash 975885903, now seen corresponding path program 1 times [2020-12-02 12:10:03,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:03,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295117721] [2020-12-02 12:10:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:10:03,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295117721] [2020-12-02 12:10:03,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:03,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:03,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536669259] [2020-12-02 12:10:03,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:03,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:03,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:03,682 INFO L87 Difference]: Start difference. First operand 178 states and 455 transitions. Second operand 4 states. [2020-12-02 12:10:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:03,710 INFO L93 Difference]: Finished difference Result 187 states and 464 transitions. [2020-12-02 12:10:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:03,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:10:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:03,715 INFO L225 Difference]: With dead ends: 187 [2020-12-02 12:10:03,716 INFO L226 Difference]: Without dead ends: 187 [2020-12-02 12:10:03,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-02 12:10:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-12-02 12:10:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-02 12:10:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 431 transitions. [2020-12-02 12:10:03,750 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 431 transitions. Word has length 9 [2020-12-02 12:10:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:03,751 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 431 transitions. [2020-12-02 12:10:03,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 431 transitions. [2020-12-02 12:10:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:10:03,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:03,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:03,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:10:03,754 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:03,754 INFO L82 PathProgramCache]: Analyzing trace with hash -615576110, now seen corresponding path program 1 times [2020-12-02 12:10:03,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:03,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035049120] [2020-12-02 12:10:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:03,866 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 12:10:03,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035049120] [2020-12-02 12:10:03,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:03,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:03,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177793304] [2020-12-02 12:10:03,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:03,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:03,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:03,872 INFO L87 Difference]: Start difference. First operand 169 states and 431 transitions. Second operand 4 states. [2020-12-02 12:10:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:03,944 INFO L93 Difference]: Finished difference Result 209 states and 515 transitions. [2020-12-02 12:10:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:10:03,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:10:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:03,948 INFO L225 Difference]: With dead ends: 209 [2020-12-02 12:10:03,948 INFO L226 Difference]: Without dead ends: 197 [2020-12-02 12:10:03,949 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 12:10:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-02 12:10:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2020-12-02 12:10:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-02 12:10:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 446 transitions. [2020-12-02 12:10:03,964 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 446 transitions. Word has length 10 [2020-12-02 12:10:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:03,965 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 446 transitions. [2020-12-02 12:10:03,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 446 transitions. [2020-12-02 12:10:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:10:03,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:03,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:03,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:10:03,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash 187690604, now seen corresponding path program 2 times [2020-12-02 12:10:03,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:03,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702371743] [2020-12-02 12:10:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:04,073 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 12:10:04,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702371743] [2020-12-02 12:10:04,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:04,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:10:04,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023625804] [2020-12-02 12:10:04,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:10:04,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:04,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:10:04,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:10:04,077 INFO L87 Difference]: Start difference. First operand 175 states and 446 transitions. Second operand 5 states. [2020-12-02 12:10:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:04,121 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2020-12-02 12:10:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:10:04,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:10:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:04,123 INFO L225 Difference]: With dead ends: 234 [2020-12-02 12:10:04,123 INFO L226 Difference]: Without dead ends: 144 [2020-12-02 12:10:04,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:10:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-02 12:10:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2020-12-02 12:10:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-02 12:10:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 315 transitions. [2020-12-02 12:10:04,132 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 315 transitions. Word has length 10 [2020-12-02 12:10:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:04,132 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 315 transitions. [2020-12-02 12:10:04,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:10:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 315 transitions. [2020-12-02 12:10:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:10:04,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:04,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:04,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:10:04,135 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:04,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1342775669, now seen corresponding path program 1 times [2020-12-02 12:10:04,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:04,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453198228] [2020-12-02 12:10:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:04,249 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 12:10:04,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453198228] [2020-12-02 12:10:04,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:04,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:04,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954357527] [2020-12-02 12:10:04,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:04,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:04,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:04,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:04,252 INFO L87 Difference]: Start difference. First operand 132 states and 315 transitions. Second operand 4 states. [2020-12-02 12:10:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:04,293 INFO L93 Difference]: Finished difference Result 155 states and 339 transitions. [2020-12-02 12:10:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:10:04,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:10:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:04,295 INFO L225 Difference]: With dead ends: 155 [2020-12-02 12:10:04,295 INFO L226 Difference]: Without dead ends: 115 [2020-12-02 12:10:04,295 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 12:10:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-02 12:10:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-02 12:10:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-02 12:10:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 251 transitions. [2020-12-02 12:10:04,300 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 251 transitions. Word has length 11 [2020-12-02 12:10:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:04,300 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 251 transitions. [2020-12-02 12:10:04,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 251 transitions. [2020-12-02 12:10:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:10:04,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:04,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:04,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:10:04,301 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1283997363, now seen corresponding path program 1 times [2020-12-02 12:10:04,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:04,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954290627] [2020-12-02 12:10:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:04,384 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 12:10:04,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954290627] [2020-12-02 12:10:04,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:04,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:10:04,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936234283] [2020-12-02 12:10:04,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:10:04,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:04,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:10:04,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:10:04,386 INFO L87 Difference]: Start difference. First operand 115 states and 251 transitions. Second operand 5 states. [2020-12-02 12:10:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:04,435 INFO L93 Difference]: Finished difference Result 116 states and 234 transitions. [2020-12-02 12:10:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:10:04,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:10:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:04,438 INFO L225 Difference]: With dead ends: 116 [2020-12-02 12:10:04,438 INFO L226 Difference]: Without dead ends: 89 [2020-12-02 12:10:04,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:10:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-02 12:10:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-02 12:10:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-02 12:10:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 176 transitions. [2020-12-02 12:10:04,443 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 176 transitions. Word has length 12 [2020-12-02 12:10:04,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:04,444 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 176 transitions. [2020-12-02 12:10:04,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:10:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 176 transitions. [2020-12-02 12:10:04,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:10:04,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:04,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:04,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:10:04,446 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1633997476, now seen corresponding path program 1 times [2020-12-02 12:10:04,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:04,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889517868] [2020-12-02 12:10:04,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:04,557 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 12:10:04,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889517868] [2020-12-02 12:10:04,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:04,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:10:04,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701413580] [2020-12-02 12:10:04,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:10:04,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:10:04,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:10:04,560 INFO L87 Difference]: Start difference. First operand 89 states and 176 transitions. Second operand 6 states. [2020-12-02 12:10:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:04,616 INFO L93 Difference]: Finished difference Result 85 states and 166 transitions. [2020-12-02 12:10:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:10:04,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:10:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:04,619 INFO L225 Difference]: With dead ends: 85 [2020-12-02 12:10:04,619 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 12:10:04,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:10:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 12:10:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-02 12:10:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-02 12:10:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 83 transitions. [2020-12-02 12:10:04,625 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 83 transitions. Word has length 14 [2020-12-02 12:10:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:04,625 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 83 transitions. [2020-12-02 12:10:04,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:10:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 83 transitions. [2020-12-02 12:10:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:10:04,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:04,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:04,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:10:04,627 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1390745954, now seen corresponding path program 1 times [2020-12-02 12:10:04,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:04,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83018464] [2020-12-02 12:10:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:04,717 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 12:10:04,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83018464] [2020-12-02 12:10:04,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:04,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:04,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362229184] [2020-12-02 12:10:04,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:10:04,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:04,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:10:04,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:10:04,721 INFO L87 Difference]: Start difference. First operand 46 states and 83 transitions. Second operand 3 states. [2020-12-02 12:10:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:04,733 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-12-02 12:10:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:10:04,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-02 12:10:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:04,735 INFO L225 Difference]: With dead ends: 59 [2020-12-02 12:10:04,735 INFO L226 Difference]: Without dead ends: 33 [2020-12-02 12:10:04,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:10:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-02 12:10:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-02 12:10:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-02 12:10:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-02 12:10:04,738 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-12-02 12:10:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:04,738 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-02 12:10:04,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:10:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-02 12:10:04,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:10:04,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:04,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:04,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:10:04,739 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:04,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1414383408, now seen corresponding path program 2 times [2020-12-02 12:10:04,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:04,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119527482] [2020-12-02 12:10:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:04,807 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 12:10:04,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119527482] [2020-12-02 12:10:04,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:04,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:10:04,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001144190] [2020-12-02 12:10:04,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:04,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:04,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:04,814 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-02 12:10:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:04,828 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-12-02 12:10:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:04,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-02 12:10:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:04,829 INFO L225 Difference]: With dead ends: 32 [2020-12-02 12:10:04,829 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:10:04,829 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 12:10:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:10:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:10:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:10:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:10:04,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:10:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:04,830 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:10:04,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:10:04,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:10:04,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:10:04,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:10:04 BasicIcfg [2020-12-02 12:10:04,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:10:04,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:10:04,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:10:04,837 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:10:04,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:58" (3/4) ... [2020-12-02 12:10:04,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:10:04,853 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:10:04,853 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:10:04,853 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:10:04,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:10:04,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:10:04,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:10:04,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:10:04,940 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:10:04,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:10:04,944 INFO L168 Benchmark]: Toolchain (without parser) took 8005.77 ms. Allocated memory was 58.7 MB in the beginning and 134.2 MB in the end (delta: 75.5 MB). Free memory was 34.3 MB in the beginning and 82.0 MB in the end (delta: -47.7 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:04,945 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 39.8 MB. Free memory was 26.0 MB in the beginning and 26.0 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:10:04,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.27 ms. Allocated memory is still 58.7 MB. Free memory was 34.1 MB in the beginning and 32.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:04,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.24 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 30.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:04,949 INFO L168 Benchmark]: Boogie Preprocessor took 32.29 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 29.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:10:04,949 INFO L168 Benchmark]: RCFGBuilder took 699.68 ms. Allocated memory is still 58.7 MB. Free memory was 29.1 MB in the beginning and 24.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:04,951 INFO L168 Benchmark]: TraceAbstraction took 6380.56 ms. Allocated memory was 58.7 MB in the beginning and 134.2 MB in the end (delta: 75.5 MB). Free memory was 24.0 MB in the beginning and 85.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:04,954 INFO L168 Benchmark]: Witness Printer took 103.74 ms. Allocated memory is still 134.2 MB. Free memory was 85.1 MB in the beginning and 82.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:04,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 39.8 MB. Free memory was 26.0 MB in the beginning and 26.0 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 726.27 ms. Allocated memory is still 58.7 MB. Free memory was 34.1 MB in the beginning and 32.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.24 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 30.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.29 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 29.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 699.68 ms. Allocated memory is still 58.7 MB. Free memory was 29.1 MB in the beginning and 24.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6380.56 ms. Allocated memory was 58.7 MB in the beginning and 134.2 MB in the end (delta: 75.5 MB). Free memory was 24.0 MB in the beginning and 85.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Witness Printer took 103.74 ms. Allocated memory is still 134.2 MB. Free memory was 85.1 MB in the beginning and 82.0 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 727 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2226 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 166 SDtfs, 180 SDslu, 215 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...