./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/safe000_pso.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 91075ae7e3a26ae9d4ecaa0a9940d63b3390d42e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:27:12,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:27:12,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:27:12,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:27:12,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:27:12,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:27:12,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:27:12,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:27:12,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:27:12,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:27:12,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:27:12,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:27:12,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:27:12,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:27:12,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:27:12,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:27:12,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:27:12,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:27:12,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:27:12,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:27:12,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:27:12,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:27:12,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:27:12,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:27:12,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:27:12,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:27:12,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:27:12,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:27:12,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:27:12,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:27:12,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:27:12,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:27:12,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:27:12,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:27:12,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:27:12,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:27:12,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:27:12,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:27:12,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:27:12,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:27:12,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:27:12,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:27:12,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:27:12,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:27:12,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:27:12,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:27:12,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:27:12,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:27:12,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:27:12,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:27:12,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:27:12,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:27:12,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:27:12,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:27:12,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:27:12,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:27:12,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:27:12,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:27:12,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:27:12,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:27:12,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:27:12,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:27:12,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:27:12,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:27:12,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:27:12,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:27:12,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:27:12,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:27:12,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:27:12,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:27:12,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:27:12,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91075ae7e3a26ae9d4ecaa0a9940d63b3390d42e [2020-10-26 00:27:13,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:27:13,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:27:13,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:27:13,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:27:13,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:27:13,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2020-10-26 00:27:13,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43f2ce8c/f508dda902ab4dd4b82aed9fb1111da4/FLAG38b5c11b8 [2020-10-26 00:27:13,940 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:27:13,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2020-10-26 00:27:13,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43f2ce8c/f508dda902ab4dd4b82aed9fb1111da4/FLAG38b5c11b8 [2020-10-26 00:27:14,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43f2ce8c/f508dda902ab4dd4b82aed9fb1111da4 [2020-10-26 00:27:14,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:27:14,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:27:14,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:27:14,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:27:14,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:27:14,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:14,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c660fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14, skipping insertion in model container [2020-10-26 00:27:14,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:14,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:27:14,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:27:14,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:27:14,774 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:27:14,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:27:14,972 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:27:14,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14 WrapperNode [2020-10-26 00:27:14,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:27:14,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:27:14,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:27:14,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:27:14,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:27:15,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:27:15,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:27:15,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:27:15,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (1/1) ... [2020-10-26 00:27:15,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:27:15,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:27:15,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:27:15,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:27:15,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (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 [2020-10-26 00:27:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:27:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:27:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:27:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:27:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:27:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:27:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:27:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:27:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:27:15,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:27:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:27:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:27:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:27:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:27:15,166 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:27:15,821 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:27:15,822 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:27:15,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:27:15 BoogieIcfgContainer [2020-10-26 00:27:15,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:27:15,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:27:15,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:27:15,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:27:15,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:27:14" (1/3) ... [2020-10-26 00:27:15,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:27:15, skipping insertion in model container [2020-10-26 00:27:15,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:14" (2/3) ... [2020-10-26 00:27:15,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:27:15, skipping insertion in model container [2020-10-26 00:27:15,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:27:15" (3/3) ... [2020-10-26 00:27:15,834 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-10-26 00:27:15,847 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:27:15,848 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:27:15,854 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:27:15,855 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:27:15,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,886 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,887 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,888 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,888 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,889 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,889 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,900 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,900 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,900 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,907 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,907 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:15,910 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:27:15,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:27:15,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:27:15,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:27:15,950 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:27:15,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:27:15,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:27:15,951 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:27:15,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:27:15,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:27:15,977 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:27:15,980 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:27:15,984 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:27:15,986 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-26 00:27:16,042 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-26 00:27:16,043 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:27:16,048 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:27:16,051 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:27:18,437 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 00:27:18,561 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:27:18,577 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-10-26 00:27:18,578 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-26 00:27:18,588 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-26 00:27:18,622 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-26 00:27:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-26 00:27:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:27:18,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:18,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:18,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-26 00:27:18,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:18,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208841474] [2020-10-26 00:27:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:18,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208841474] [2020-10-26 00:27:18,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:18,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:27:18,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701500716] [2020-10-26 00:27:18,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:27:18,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:18,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:27:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:27:18,853 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-26 00:27:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:18,890 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-26 00:27:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:27:18,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:27:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:18,911 INFO L225 Difference]: With dead ends: 362 [2020-10-26 00:27:18,911 INFO L226 Difference]: Without dead ends: 298 [2020-10-26 00:27:18,912 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 [2020-10-26 00:27:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-26 00:27:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-26 00:27:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 00:27:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-26 00:27:19,003 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-26 00:27:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:19,005 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-26 00:27:19,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:27:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-26 00:27:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:27:19,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:19,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:19,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:27:19,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:19,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:19,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-26 00:27:19,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:19,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853355321] [2020-10-26 00:27:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:19,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853355321] [2020-10-26 00:27:19,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:19,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:19,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329331343] [2020-10-26 00:27:19,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:19,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:19,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:19,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:19,217 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-26 00:27:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:19,284 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-26 00:27:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:27:19,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-26 00:27:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:19,289 INFO L225 Difference]: With dead ends: 330 [2020-10-26 00:27:19,289 INFO L226 Difference]: Without dead ends: 266 [2020-10-26 00:27:19,290 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 [2020-10-26 00:27:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-26 00:27:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-26 00:27:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-26 00:27:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-26 00:27:19,321 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-26 00:27:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:19,322 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-26 00:27:19,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-26 00:27:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:27:19,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:19,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:19,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:27:19,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-10-26 00:27:19,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:19,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104816102] [2020-10-26 00:27:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:19,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104816102] [2020-10-26 00:27:19,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:19,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:19,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610390847] [2020-10-26 00:27:19,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:19,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:19,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:19,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:19,454 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-26 00:27:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:19,530 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-26 00:27:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:27:19,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 00:27:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:19,533 INFO L225 Difference]: With dead ends: 290 [2020-10-26 00:27:19,533 INFO L226 Difference]: Without dead ends: 242 [2020-10-26 00:27:19,534 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 [2020-10-26 00:27:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-26 00:27:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-26 00:27:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-26 00:27:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-26 00:27:19,549 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-26 00:27:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:19,549 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-26 00:27:19,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-26 00:27:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:27:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:19,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:19,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:27:19,552 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:19,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-10-26 00:27:19,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:19,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561250508] [2020-10-26 00:27:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:19,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561250508] [2020-10-26 00:27:19,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:19,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:27:19,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774835693] [2020-10-26 00:27:19,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:27:19,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:27:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:27:19,649 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-10-26 00:27:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:19,677 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-10-26 00:27:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:19,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:27:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:19,681 INFO L225 Difference]: With dead ends: 260 [2020-10-26 00:27:19,682 INFO L226 Difference]: Without dead ends: 224 [2020-10-26 00:27:19,682 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 [2020-10-26 00:27:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-26 00:27:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-26 00:27:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-26 00:27:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-10-26 00:27:19,693 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-10-26 00:27:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:19,693 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-10-26 00:27:19,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:27:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-10-26 00:27:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:27:19,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:19,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:19,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:27:19,696 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:19,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-10-26 00:27:19,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:19,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858692645] [2020-10-26 00:27:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:19,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858692645] [2020-10-26 00:27:19,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:19,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:19,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305784616] [2020-10-26 00:27:19,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:19,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:19,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:19,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:19,770 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-10-26 00:27:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:19,822 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-10-26 00:27:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:27:19,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 00:27:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:19,825 INFO L225 Difference]: With dead ends: 293 [2020-10-26 00:27:19,825 INFO L226 Difference]: Without dead ends: 146 [2020-10-26 00:27:19,825 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 [2020-10-26 00:27:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-26 00:27:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-26 00:27:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 00:27:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-26 00:27:19,832 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-10-26 00:27:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:19,833 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-26 00:27:19,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-26 00:27:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:27:19,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:19,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:19,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:27:19,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:19,836 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-10-26 00:27:19,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:19,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823010683] [2020-10-26 00:27:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:19,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823010683] [2020-10-26 00:27:19,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:19,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:27:19,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844403053] [2020-10-26 00:27:19,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:27:19,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:19,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:27:19,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:27:19,893 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-10-26 00:27:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:19,942 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-10-26 00:27:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:19,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 00:27:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:19,945 INFO L225 Difference]: With dead ends: 160 [2020-10-26 00:27:19,945 INFO L226 Difference]: Without dead ends: 142 [2020-10-26 00:27:19,945 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 [2020-10-26 00:27:19,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-26 00:27:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-26 00:27:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-26 00:27:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-10-26 00:27:19,952 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-10-26 00:27:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:19,953 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-10-26 00:27:19,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:27:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-10-26 00:27:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:27:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:19,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:19,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:27:19,955 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-10-26 00:27:19,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:19,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622848339] [2020-10-26 00:27:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:20,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622848339] [2020-10-26 00:27:20,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:20,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:20,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914904434] [2020-10-26 00:27:20,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:20,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:20,034 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-10-26 00:27:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:20,098 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-10-26 00:27:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:20,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 00:27:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:20,100 INFO L225 Difference]: With dead ends: 186 [2020-10-26 00:27:20,100 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 00:27:20,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:27:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 00:27:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-26 00:27:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-26 00:27:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-10-26 00:27:20,106 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-10-26 00:27:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:20,107 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-10-26 00:27:20,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-10-26 00:27:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:27:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:20,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:20,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:27:20,108 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-10-26 00:27:20,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:20,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947687628] [2020-10-26 00:27:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:20,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947687628] [2020-10-26 00:27:20,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:20,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:27:20,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681994346] [2020-10-26 00:27:20,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:27:20,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:20,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:27:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:27:20,239 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-10-26 00:27:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:20,323 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-10-26 00:27:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:27:20,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-26 00:27:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:20,324 INFO L225 Difference]: With dead ends: 62 [2020-10-26 00:27:20,324 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:27:20,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:27:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:27:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:27:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:27:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:27:20,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-26 00:27:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:20,325 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:27:20,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:27:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:27:20,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:27:20,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:27:20,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:27:20 BasicIcfg [2020-10-26 00:27:20,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:27:20,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:27:20,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:27:20,335 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:27:20,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:27:15" (3/4) ... [2020-10-26 00:27:20,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:27:20,346 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:27:20,346 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:27:20,346 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:27:20,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:27:20,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:27:20,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:27:20,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:27:20,404 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:27:20,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:27:20,406 INFO L168 Benchmark]: Toolchain (without parser) took 6199.77 ms. Allocated memory was 44.0 MB in the beginning and 102.8 MB in the end (delta: 58.7 MB). Free memory was 29.4 MB in the beginning and 38.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:20,407 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 35.7 MB. Free memory was 18.1 MB in the beginning and 18.1 MB in the end (delta: 19.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:27:20,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.81 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 27.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:20,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.89 ms. Allocated memory is still 54.5 MB. Free memory was 27.2 MB in the beginning and 25.2 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:27:20,409 INFO L168 Benchmark]: Boogie Preprocessor took 30.99 ms. Allocated memory is still 54.5 MB. Free memory was 25.2 MB in the beginning and 23.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:27:20,413 INFO L168 Benchmark]: RCFGBuilder took 761.82 ms. Allocated memory is still 54.5 MB. Free memory was 23.7 MB in the beginning and 30.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:20,417 INFO L168 Benchmark]: TraceAbstraction took 4508.00 ms. Allocated memory was 54.5 MB in the beginning and 102.8 MB in the end (delta: 48.2 MB). Free memory was 29.5 MB in the beginning and 41.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:20,417 INFO L168 Benchmark]: Witness Printer took 69.88 ms. Allocated memory is still 102.8 MB. Free memory was 41.2 MB in the beginning and 38.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:20,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 35.7 MB. Free memory was 18.1 MB in the beginning and 18.1 MB in the end (delta: 19.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 758.81 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 27.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.89 ms. Allocated memory is still 54.5 MB. Free memory was 27.2 MB in the beginning and 25.2 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.99 ms. Allocated memory is still 54.5 MB. Free memory was 25.2 MB in the beginning and 23.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 761.82 ms. Allocated memory is still 54.5 MB. Free memory was 23.7 MB in the beginning and 30.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4508.00 ms. Allocated memory was 54.5 MB in the beginning and 102.8 MB in the end (delta: 48.2 MB). Free memory was 29.5 MB in the beginning and 41.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 69.88 ms. Allocated memory is still 102.8 MB. Free memory was 41.2 MB in the beginning and 38.1 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 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...