./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe024_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/safe024_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 1468379dc280e03cd79ccd34c208a639d6a349fa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:10:53,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:10:53,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:10:53,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:10:53,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:10:53,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:10:53,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:10:53,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:10:53,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:10:53,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:10:53,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:10:53,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:10:53,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:10:53,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:10:53,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:10:53,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:10:53,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:10:53,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:10:53,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:10:53,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:10:53,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:10:53,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:10:53,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:10:53,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:10:53,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:10:53,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:10:53,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:10:53,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:10:53,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:10:53,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:10:53,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:10:53,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:10:53,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:10:53,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:10:53,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:10:53,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:10:53,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:10:53,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:10:53,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:10:53,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:10:53,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:10:53,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:10:53,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:10:53,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:10:53,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:10:53,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:10:53,677 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:10:53,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:10:53,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:10:53,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:10:53,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:10:53,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:10:53,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:10:53,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:10:53,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:10:53,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:10:53,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:10:53,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:10:53,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:10:53,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:10:53,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:10:53,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:10:53,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:10:53,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:10:53,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:10:53,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:10:53,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:10:53,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:10:53,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:10:53,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:10:53,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:10:53,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1468379dc280e03cd79ccd34c208a639d6a349fa [2020-12-02 12:10:54,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:10:54,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:10:54,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:10:54,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:10:54,121 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:10:54,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i [2020-12-02 12:10:54,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9b5cf3/b6414cf385844c60a82004e5c8d3101f/FLAG4b869a01d [2020-12-02 12:10:54,956 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:10:54,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.oepc.i [2020-12-02 12:10:54,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9b5cf3/b6414cf385844c60a82004e5c8d3101f/FLAG4b869a01d [2020-12-02 12:10:55,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9b5cf3/b6414cf385844c60a82004e5c8d3101f [2020-12-02 12:10:55,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:10:55,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:10:55,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:10:55,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:10:55,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:10:55,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:10:55" (1/1) ... [2020-12-02 12:10:55,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31416be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:55, skipping insertion in model container [2020-12-02 12:10:55,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:10:55" (1/1) ... [2020-12-02 12:10:55,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:10:55,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:10:55,521 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/safe024_tso.oepc.i[950,963] [2020-12-02 12:10:55,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:10:55,798 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:10:55,817 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/safe024_tso.oepc.i[950,963] [2020-12-02 12:10:55,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:10:56,013 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:10:56,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56 WrapperNode [2020-12-02 12:10:56,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:10:56,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:10:56,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:10:56,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:10:56,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:10:56,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:10:56,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:10:56,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:10:56,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (1/1) ... [2020-12-02 12:10:56,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:10:56,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:10:56,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:10:56,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:10:56,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (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 12:10:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:10:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:10:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:10:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:10:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:10:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:10:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:10:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:10:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:10:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:10:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:10:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:10:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:10:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:10:56,222 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 12:10:56,676 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:10:56,676 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:10:56,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:10:56 BoogieIcfgContainer [2020-12-02 12:10:56,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:10:56,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:10:56,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:10:56,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:10:56,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:10:55" (1/3) ... [2020-12-02 12:10:56,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edf5076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:10:56, skipping insertion in model container [2020-12-02 12:10:56,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:56" (2/3) ... [2020-12-02 12:10:56,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edf5076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:10:56, skipping insertion in model container [2020-12-02 12:10:56,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:10:56" (3/3) ... [2020-12-02 12:10:56,689 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2020-12-02 12:10:56,707 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:10:56,708 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:10:56,720 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:10:56,721 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:10:56,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,753 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,753 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,754 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,754 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,760 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:56,777 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:10:56,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:10:56,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:10:56,815 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:10:56,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:10:56,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:10:56,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:10:56,816 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:10:56,816 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:10:56,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:10:56,831 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:10:56,833 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:10:56,837 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:10:56,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-02 12:10:56,887 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-02 12:10:56,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:10:56,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:10:56,895 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:10:58,924 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-02 12:10:59,079 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-02 12:10:59,655 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:10:59,771 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:10:59,994 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:00,102 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:11:00,173 INFO L131 LiptonReduction]: Checked pairs total: 2787 [2020-12-02 12:11:00,173 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-02 12:11:00,180 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:11:00,216 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:11:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:11:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:11:00,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:00,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:00,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash -661732023, now seen corresponding path program 1 times [2020-12-02 12:11:00,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:00,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904482473] [2020-12-02 12:11:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:00,456 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 12:11:00,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904482473] [2020-12-02 12:11:00,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:00,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:00,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991319977] [2020-12-02 12:11:00,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:11:00,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:11:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:11:00,483 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:11:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:00,522 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:11:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:11:00,524 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:11:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:00,542 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:11:00,543 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:11:00,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:11:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:11:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:11:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:11:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:11:00,623 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:11:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:00,625 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:11:00,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:11:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:11:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:11:00,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:00,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:00,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:11:00,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:00,629 INFO L82 PathProgramCache]: Analyzing trace with hash 961112404, now seen corresponding path program 1 times [2020-12-02 12:11:00,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:00,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376508716] [2020-12-02 12:11:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:00,788 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 12:11:00,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376508716] [2020-12-02 12:11:00,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:00,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:00,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721673314] [2020-12-02 12:11:00,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:00,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:00,794 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:11:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:00,826 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-02 12:11:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:00,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:11:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:00,831 INFO L225 Difference]: With dead ends: 330 [2020-12-02 12:11:00,831 INFO L226 Difference]: Without dead ends: 266 [2020-12-02 12:11:00,832 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 12:11:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-02 12:11:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-02 12:11:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-02 12:11:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-02 12:11:00,855 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-02 12:11:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:00,856 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-02 12:11:00,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-02 12:11:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:00,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:00,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:00,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:11:00,859 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:00,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash -270319833, now seen corresponding path program 1 times [2020-12-02 12:11:00,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:00,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798295227] [2020-12-02 12:11:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:00,959 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 12:11:00,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798295227] [2020-12-02 12:11:00,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:00,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:00,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109906657] [2020-12-02 12:11:00,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:00,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:00,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:00,967 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-02 12:11:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,032 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-12-02 12:11:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:01,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:11:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,036 INFO L225 Difference]: With dead ends: 314 [2020-12-02 12:11:01,037 INFO L226 Difference]: Without dead ends: 170 [2020-12-02 12:11:01,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:11:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-02 12:11:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-02 12:11:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-02 12:11:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-02 12:11:01,071 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-12-02 12:11:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,072 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-02 12:11:01,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-02 12:11:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:11:01,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:01,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:01,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:11:01,077 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:01,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2076633207, now seen corresponding path program 1 times [2020-12-02 12:11:01,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:01,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103032285] [2020-12-02 12:11:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:01,246 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 12:11:01,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103032285] [2020-12-02 12:11:01,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:01,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:01,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069354050] [2020-12-02 12:11:01,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:01,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:01,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:01,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:01,250 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-12-02 12:11:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,283 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-12-02 12:11:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:01,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:11:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,285 INFO L225 Difference]: With dead ends: 183 [2020-12-02 12:11:01,286 INFO L226 Difference]: Without dead ends: 143 [2020-12-02 12:11:01,286 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 12:11:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-02 12:11:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-02 12:11:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-02 12:11:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-12-02 12:11:01,293 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-12-02 12:11:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,293 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-12-02 12:11:01,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-12-02 12:11:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:11:01,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:01,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:01,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:11:01,296 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:01,297 INFO L82 PathProgramCache]: Analyzing trace with hash 593138453, now seen corresponding path program 1 times [2020-12-02 12:11:01,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:01,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579056735] [2020-12-02 12:11:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:01,363 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 12:11:01,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579056735] [2020-12-02 12:11:01,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:01,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:01,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345134674] [2020-12-02 12:11:01,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:01,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:01,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:01,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:01,367 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-12-02 12:11:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,411 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-12-02 12:11:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:01,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:11:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,413 INFO L225 Difference]: With dead ends: 129 [2020-12-02 12:11:01,413 INFO L226 Difference]: Without dead ends: 104 [2020-12-02 12:11:01,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-02 12:11:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-02 12:11:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-02 12:11:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-12-02 12:11:01,418 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-12-02 12:11:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,418 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-12-02 12:11:01,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-12-02 12:11:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:11:01,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:01,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:01,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:11:01,420 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1258270807, now seen corresponding path program 1 times [2020-12-02 12:11:01,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:01,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485786408] [2020-12-02 12:11:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:01,485 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 12:11:01,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485786408] [2020-12-02 12:11:01,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:01,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:11:01,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702064703] [2020-12-02 12:11:01,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:11:01,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:11:01,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:01,489 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-12-02 12:11:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,559 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-12-02 12:11:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:01,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:11:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,562 INFO L225 Difference]: With dead ends: 93 [2020-12-02 12:11:01,562 INFO L226 Difference]: Without dead ends: 85 [2020-12-02 12:11:01,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:11:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-02 12:11:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-02 12:11:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-02 12:11:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-12-02 12:11:01,576 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-12-02 12:11:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,577 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-12-02 12:11:01,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:11:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-12-02 12:11:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:01,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:01,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:01,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:11:01,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1011219395, now seen corresponding path program 1 times [2020-12-02 12:11:01,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:01,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804859045] [2020-12-02 12:11:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:01,705 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 12:11:01,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804859045] [2020-12-02 12:11:01,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:01,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:01,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871518870] [2020-12-02 12:11:01,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:01,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:01,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:01,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:01,709 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-12-02 12:11:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,753 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-12-02 12:11:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:01,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:11:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,755 INFO L225 Difference]: With dead ends: 99 [2020-12-02 12:11:01,755 INFO L226 Difference]: Without dead ends: 57 [2020-12-02 12:11:01,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-02 12:11:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-12-02 12:11:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-02 12:11:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2020-12-02 12:11:01,758 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 18 [2020-12-02 12:11:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,759 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2020-12-02 12:11:01,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2020-12-02 12:11:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:01,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:01,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:01,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:11:01,761 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:01,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1578916891, now seen corresponding path program 2 times [2020-12-02 12:11:01,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:01,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98914314] [2020-12-02 12:11:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:01,815 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 12:11:01,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98914314] [2020-12-02 12:11:01,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:01,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:01,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459156240] [2020-12-02 12:11:01,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:01,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:01,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:01,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:01,818 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand 5 states. [2020-12-02 12:11:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,847 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-02 12:11:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:01,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:11:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,848 INFO L225 Difference]: With dead ends: 67 [2020-12-02 12:11:01,848 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 12:11:01,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 12:11:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 12:11:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 12:11:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-02 12:11:01,851 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-02 12:11:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,851 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-02 12:11:01,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-02 12:11:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:01,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:01,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:01,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:11:01,853 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:01,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:01,854 INFO L82 PathProgramCache]: Analyzing trace with hash 577230555, now seen corresponding path program 3 times [2020-12-02 12:11:01,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:01,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460025418] [2020-12-02 12:11:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:01,900 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 12:11:01,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460025418] [2020-12-02 12:11:01,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:01,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:01,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166856605] [2020-12-02 12:11:01,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:01,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:01,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:01,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:01,903 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-02 12:11:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:01,926 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-02 12:11:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:01,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:11:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:01,927 INFO L225 Difference]: With dead ends: 36 [2020-12-02 12:11:01,927 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:11:01,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:11:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:11:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:11:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:11:01,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:11:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:01,929 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:11:01,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:11:01,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:11:01,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:11:01,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:11:01 BasicIcfg [2020-12-02 12:11:01,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:11:01,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:11:01,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:11:01,935 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:11:01,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:10:56" (3/4) ... [2020-12-02 12:11:01,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:11:01,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:11:01,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:11:01,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:11:01,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:11:01,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:11:01,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:01,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:02,000 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:11:02,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:11:02,002 INFO L168 Benchmark]: Toolchain (without parser) took 6776.65 ms. Allocated memory was 44.0 MB in the beginning and 119.5 MB in the end (delta: 75.5 MB). Free memory was 28.8 MB in the beginning and 50.8 MB in the end (delta: -22.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:02,003 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 35.7 MB. Free memory was 22.1 MB in the beginning and 22.1 MB in the end (delta: 22.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:02,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.54 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.6 MB in the beginning and 34.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:02,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.23 ms. Allocated memory is still 54.5 MB. Free memory was 34.7 MB in the beginning and 32.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:02,005 INFO L168 Benchmark]: Boogie Preprocessor took 30.46 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 31.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:02,006 INFO L168 Benchmark]: RCFGBuilder took 577.83 ms. Allocated memory is still 54.5 MB. Free memory was 31.2 MB in the beginning and 21.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:02,007 INFO L168 Benchmark]: TraceAbstraction took 5252.76 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 20.4 MB in the beginning and 54.0 MB in the end (delta: -33.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:02,007 INFO L168 Benchmark]: Witness Printer took 66.79 ms. Allocated memory is still 119.5 MB. Free memory was 54.0 MB in the beginning and 50.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:02,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 35.7 MB. Free memory was 22.1 MB in the beginning and 22.1 MB in the end (delta: 22.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 780.54 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.6 MB in the beginning and 34.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.23 ms. Allocated memory is still 54.5 MB. Free memory was 34.7 MB in the beginning and 32.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.46 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 31.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 577.83 ms. Allocated memory is still 54.5 MB. Free memory was 31.2 MB in the beginning and 21.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5252.76 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 20.4 MB in the beginning and 54.0 MB in the end (delta: -33.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 66.79 ms. Allocated memory is still 119.5 MB. Free memory was 54.0 MB in the beginning and 50.8 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 867 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 84 PlacesBefore, 32 PlacesAfterwards, 76 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2787 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 184 SDtfs, 240 SDslu, 291 SDs, 0 SdLazy, 85 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s 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, 9 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 4834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...