./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da2a21ed04669479605d762389aa47053d0acc3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:14:16,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:14:16,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:14:17,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:14:17,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:14:17,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:14:17,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:14:17,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:14:17,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:14:17,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:14:17,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:14:17,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:14:17,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:14:17,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:14:17,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:14:17,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:14:17,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:14:17,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:14:17,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:14:17,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:14:17,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:14:17,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:14:17,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:14:17,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:14:17,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:14:17,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:14:17,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:14:17,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:14:17,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:14:17,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:14:17,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:14:17,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:14:17,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:14:17,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:14:17,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:14:17,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:14:17,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:14:17,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:14:17,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:14:17,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:14:17,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:14:17,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:14:17,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:14:17,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:14:17,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:14:17,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:14:17,152 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:14:17,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:14:17,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:14:17,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:14:17,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:14:17,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:14:17,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:14:17,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:14:17,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:14:17,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:14:17,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:14:17,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:14:17,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:14:17,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:14:17,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:14:17,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:14:17,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:14:17,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:17,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:14:17,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:14:17,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:14:17,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:14:17,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:14:17,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:14:17,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:14:17,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da2a21ed04669479605d762389aa47053d0acc3 [2020-12-02 12:14:17,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:14:17,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:14:17,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:14:17,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:14:17,605 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:14:17,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2020-12-02 12:14:17,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04120ca6c/7676832752074cb3bc85bda490af09a5/FLAG529158f0a [2020-12-02 12:14:18,431 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:14:18,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2020-12-02 12:14:18,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04120ca6c/7676832752074cb3bc85bda490af09a5/FLAG529158f0a [2020-12-02 12:14:18,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04120ca6c/7676832752074cb3bc85bda490af09a5 [2020-12-02 12:14:18,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:14:18,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:14:18,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:18,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:14:18,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:14:18,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31aa6cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18, skipping insertion in model container [2020-12-02 12:14:18,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:14:18,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:14:18,904 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/thin002_tso.opt.i[949,962] [2020-12-02 12:14:19,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:19,149 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:14:19,168 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/thin002_tso.opt.i[949,962] [2020-12-02 12:14:19,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:19,317 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:14:19,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19 WrapperNode [2020-12-02 12:14:19,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:19,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:19,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:14:19,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:14:19,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:19,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:14:19,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:14:19,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:14:19,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (1/1) ... [2020-12-02 12:14:19,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:14:19,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:14:19,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:14:19,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:14:19,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (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 12:14:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:14:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:14:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:14:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:14:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:14:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:14:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:14:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:14:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:14:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:14:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:14:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:14:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:14:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:14:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:14:19,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:14:19,519 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 12:14:20,142 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:14:20,143 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:14:20,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:20 BoogieIcfgContainer [2020-12-02 12:14:20,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:14:20,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:14:20,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:14:20,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:14:20,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:14:18" (1/3) ... [2020-12-02 12:14:20,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4ee53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:20, skipping insertion in model container [2020-12-02 12:14:20,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:19" (2/3) ... [2020-12-02 12:14:20,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4ee53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:20, skipping insertion in model container [2020-12-02 12:14:20,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:20" (3/3) ... [2020-12-02 12:14:20,155 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-12-02 12:14:20,172 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:14:20,172 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:14:20,177 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:14:20,178 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:14:20,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,227 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,227 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,227 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,228 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,228 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,228 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,228 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,229 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,229 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,229 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,230 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,230 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,232 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,240 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,243 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,243 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,243 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,244 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:20,249 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:14:20,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:14:20,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:14:20,293 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:14:20,293 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:14:20,293 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:14:20,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:14:20,294 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:14:20,294 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:14:20,294 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:14:20,307 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:14:20,310 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:20,313 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:20,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:20,363 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2020-12-02 12:14:20,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:14:20,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2020-12-02 12:14:20,373 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2020-12-02 12:14:23,201 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-02 12:14:23,668 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-02 12:14:23,787 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-02 12:14:24,030 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-02 12:14:24,146 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-02 12:14:24,152 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2020-12-02 12:14:24,153 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-02 12:14:24,160 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-12-02 12:14:24,256 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-12-02 12:14:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-12-02 12:14:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:14:24,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:24,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:24,269 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:24,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:24,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2020-12-02 12:14:24,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:24,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547906167] [2020-12-02 12:14:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:24,536 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 12:14:24,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547906167] [2020-12-02 12:14:24,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:24,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:24,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970258969] [2020-12-02 12:14:24,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:14:24,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:24,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:14:24,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:14:24,573 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-12-02 12:14:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:24,652 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-12-02 12:14:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:14:24,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 12:14:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:24,706 INFO L225 Difference]: With dead ends: 1450 [2020-12-02 12:14:24,707 INFO L226 Difference]: Without dead ends: 1194 [2020-12-02 12:14:24,708 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 12:14:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-02 12:14:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-12-02 12:14:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-02 12:14:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-12-02 12:14:24,926 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-12-02 12:14:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:24,927 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-12-02 12:14:24,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:14:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-12-02 12:14:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:14:24,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:24,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:24,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:14:24,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2020-12-02 12:14:24,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:24,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891133799] [2020-12-02 12:14:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,201 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 12:14:25,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891133799] [2020-12-02 12:14:25,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:25,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024353072] [2020-12-02 12:14:25,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:14:25,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:14:25,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:25,207 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-12-02 12:14:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,279 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2020-12-02 12:14:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:25,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:14:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,293 INFO L225 Difference]: With dead ends: 1448 [2020-12-02 12:14:25,293 INFO L226 Difference]: Without dead ends: 1192 [2020-12-02 12:14:25,294 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 12:14:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-02 12:14:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2020-12-02 12:14:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-12-02 12:14:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2020-12-02 12:14:25,356 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2020-12-02 12:14:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:25,357 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2020-12-02 12:14:25,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:14:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2020-12-02 12:14:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:25,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:25,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:25,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:14:25,362 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2020-12-02 12:14:25,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:25,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769300560] [2020-12-02 12:14:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,515 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 12:14:25,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769300560] [2020-12-02 12:14:25,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:25,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881958214] [2020-12-02 12:14:25,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:25,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:25,521 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2020-12-02 12:14:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,649 INFO L93 Difference]: Finished difference Result 2413 states and 8471 transitions. [2020-12-02 12:14:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:25,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,669 INFO L225 Difference]: With dead ends: 2413 [2020-12-02 12:14:25,669 INFO L226 Difference]: Without dead ends: 1870 [2020-12-02 12:14:25,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2020-12-02 12:14:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1492. [2020-12-02 12:14:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-12-02 12:14:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5352 transitions. [2020-12-02 12:14:25,740 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5352 transitions. Word has length 12 [2020-12-02 12:14:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:25,741 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 5352 transitions. [2020-12-02 12:14:25,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:25,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5352 transitions. [2020-12-02 12:14:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:25,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:25,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:25,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:14:25,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:25,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:25,746 INFO L82 PathProgramCache]: Analyzing trace with hash -832796680, now seen corresponding path program 1 times [2020-12-02 12:14:25,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:25,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302999848] [2020-12-02 12:14:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,861 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 12:14:25,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302999848] [2020-12-02 12:14:25,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:25,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585940168] [2020-12-02 12:14:25,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:25,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:25,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:25,868 INFO L87 Difference]: Start difference. First operand 1492 states and 5352 transitions. Second operand 5 states. [2020-12-02 12:14:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,943 INFO L93 Difference]: Finished difference Result 1618 states and 5634 transitions. [2020-12-02 12:14:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:25,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,961 INFO L225 Difference]: With dead ends: 1618 [2020-12-02 12:14:25,961 INFO L226 Difference]: Without dead ends: 1366 [2020-12-02 12:14:25,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-12-02 12:14:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2020-12-02 12:14:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-12-02 12:14:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4818 transitions. [2020-12-02 12:14:26,027 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4818 transitions. Word has length 12 [2020-12-02 12:14:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,027 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 4818 transitions. [2020-12-02 12:14:26,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4818 transitions. [2020-12-02 12:14:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:26,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:14:26,030 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash -105254130, now seen corresponding path program 1 times [2020-12-02 12:14:26,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154069441] [2020-12-02 12:14:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,126 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 12:14:26,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154069441] [2020-12-02 12:14:26,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:26,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145583021] [2020-12-02 12:14:26,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:26,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:26,131 INFO L87 Difference]: Start difference. First operand 1366 states and 4818 transitions. Second operand 5 states. [2020-12-02 12:14:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,187 INFO L93 Difference]: Finished difference Result 1456 states and 5010 transitions. [2020-12-02 12:14:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:26,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,200 INFO L225 Difference]: With dead ends: 1456 [2020-12-02 12:14:26,200 INFO L226 Difference]: Without dead ends: 1276 [2020-12-02 12:14:26,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-12-02 12:14:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1168. [2020-12-02 12:14:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-12-02 12:14:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 4059 transitions. [2020-12-02 12:14:26,247 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 4059 transitions. Word has length 13 [2020-12-02 12:14:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,248 INFO L481 AbstractCegarLoop]: Abstraction has 1168 states and 4059 transitions. [2020-12-02 12:14:26,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 4059 transitions. [2020-12-02 12:14:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:26,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:14:26,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash -134657847, now seen corresponding path program 1 times [2020-12-02 12:14:26,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277907408] [2020-12-02 12:14:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,319 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 12:14:26,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277907408] [2020-12-02 12:14:26,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:26,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41510331] [2020-12-02 12:14:26,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:26,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:26,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:26,322 INFO L87 Difference]: Start difference. First operand 1168 states and 4059 transitions. Second operand 5 states. [2020-12-02 12:14:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,409 INFO L93 Difference]: Finished difference Result 1879 states and 6375 transitions. [2020-12-02 12:14:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:26,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,423 INFO L225 Difference]: With dead ends: 1879 [2020-12-02 12:14:26,423 INFO L226 Difference]: Without dead ends: 1438 [2020-12-02 12:14:26,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-12-02 12:14:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1114. [2020-12-02 12:14:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-12-02 12:14:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3834 transitions. [2020-12-02 12:14:26,475 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3834 transitions. Word has length 13 [2020-12-02 12:14:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,475 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 3834 transitions. [2020-12-02 12:14:26,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3834 transitions. [2020-12-02 12:14:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:14:26,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:14:26,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 118994859, now seen corresponding path program 1 times [2020-12-02 12:14:26,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970033630] [2020-12-02 12:14:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,533 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 12:14:26,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970033630] [2020-12-02 12:14:26,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:26,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013050568] [2020-12-02 12:14:26,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:26,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:26,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:26,536 INFO L87 Difference]: Start difference. First operand 1114 states and 3834 transitions. Second operand 5 states. [2020-12-02 12:14:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,630 INFO L93 Difference]: Finished difference Result 1831 states and 6166 transitions. [2020-12-02 12:14:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:26,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:14:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,644 INFO L225 Difference]: With dead ends: 1831 [2020-12-02 12:14:26,645 INFO L226 Difference]: Without dead ends: 1480 [2020-12-02 12:14:26,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-12-02 12:14:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1102. [2020-12-02 12:14:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-12-02 12:14:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 3745 transitions. [2020-12-02 12:14:26,693 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 3745 transitions. Word has length 14 [2020-12-02 12:14:26,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,693 INFO L481 AbstractCegarLoop]: Abstraction has 1102 states and 3745 transitions. [2020-12-02 12:14:26,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 3745 transitions. [2020-12-02 12:14:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:14:26,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:14:26,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,697 INFO L82 PathProgramCache]: Analyzing trace with hash 119501306, now seen corresponding path program 1 times [2020-12-02 12:14:26,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538354566] [2020-12-02 12:14:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,752 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 12:14:26,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538354566] [2020-12-02 12:14:26,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:26,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252984146] [2020-12-02 12:14:26,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:26,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:26,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:26,755 INFO L87 Difference]: Start difference. First operand 1102 states and 3745 transitions. Second operand 5 states. [2020-12-02 12:14:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,792 INFO L93 Difference]: Finished difference Result 1156 states and 3853 transitions. [2020-12-02 12:14:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:26,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:14:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,803 INFO L225 Difference]: With dead ends: 1156 [2020-12-02 12:14:26,803 INFO L226 Difference]: Without dead ends: 1048 [2020-12-02 12:14:26,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-12-02 12:14:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 940. [2020-12-02 12:14:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-12-02 12:14:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 3196 transitions. [2020-12-02 12:14:26,842 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 3196 transitions. Word has length 14 [2020-12-02 12:14:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,843 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 3196 transitions. [2020-12-02 12:14:26,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 3196 transitions. [2020-12-02 12:14:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:14:26,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:14:26,846 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash -330143100, now seen corresponding path program 1 times [2020-12-02 12:14:26,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637877876] [2020-12-02 12:14:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,925 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 12:14:26,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637877876] [2020-12-02 12:14:26,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:26,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932073982] [2020-12-02 12:14:26,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:26,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:26,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,928 INFO L87 Difference]: Start difference. First operand 940 states and 3196 transitions. Second operand 6 states. [2020-12-02 12:14:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,988 INFO L93 Difference]: Finished difference Result 1189 states and 3968 transitions. [2020-12-02 12:14:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:26,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:14:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,994 INFO L225 Difference]: With dead ends: 1189 [2020-12-02 12:14:26,994 INFO L226 Difference]: Without dead ends: 544 [2020-12-02 12:14:26,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-12-02 12:14:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2020-12-02 12:14:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-12-02 12:14:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1746 transitions. [2020-12-02 12:14:27,017 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1746 transitions. Word has length 15 [2020-12-02 12:14:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:27,017 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 1746 transitions. [2020-12-02 12:14:27,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1746 transitions. [2020-12-02 12:14:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:14:27,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:27,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:27,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:14:27,020 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash -272320691, now seen corresponding path program 1 times [2020-12-02 12:14:27,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:27,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137687900] [2020-12-02 12:14:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:27,083 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 12:14:27,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137687900] [2020-12-02 12:14:27,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:27,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:27,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759590372] [2020-12-02 12:14:27,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:27,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:27,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:27,086 INFO L87 Difference]: Start difference. First operand 544 states and 1746 transitions. Second operand 6 states. [2020-12-02 12:14:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:27,140 INFO L93 Difference]: Finished difference Result 676 states and 2098 transitions. [2020-12-02 12:14:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:27,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:14:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:27,143 INFO L225 Difference]: With dead ends: 676 [2020-12-02 12:14:27,144 INFO L226 Difference]: Without dead ends: 304 [2020-12-02 12:14:27,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-02 12:14:27,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-12-02 12:14:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-02 12:14:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 882 transitions. [2020-12-02 12:14:27,156 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 882 transitions. Word has length 15 [2020-12-02 12:14:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:27,156 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 882 transitions. [2020-12-02 12:14:27,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 882 transitions. [2020-12-02 12:14:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:14:27,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:27,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:27,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:14:27,158 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1566179768, now seen corresponding path program 1 times [2020-12-02 12:14:27,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:27,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163791191] [2020-12-02 12:14:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:27,223 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 12:14:27,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163791191] [2020-12-02 12:14:27,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:27,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496175663] [2020-12-02 12:14:27,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:27,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:27,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:27,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:27,226 INFO L87 Difference]: Start difference. First operand 304 states and 882 transitions. Second operand 6 states. [2020-12-02 12:14:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:27,275 INFO L93 Difference]: Finished difference Result 388 states and 1110 transitions. [2020-12-02 12:14:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:27,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-02 12:14:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:27,277 INFO L225 Difference]: With dead ends: 388 [2020-12-02 12:14:27,278 INFO L226 Difference]: Without dead ends: 148 [2020-12-02 12:14:27,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-02 12:14:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-12-02 12:14:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-02 12:14:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 398 transitions. [2020-12-02 12:14:27,285 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 398 transitions. Word has length 17 [2020-12-02 12:14:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:27,285 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 398 transitions. [2020-12-02 12:14:27,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 398 transitions. [2020-12-02 12:14:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:14:27,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:27,287 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 12:14:27,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:14:27,287 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:27,288 INFO L82 PathProgramCache]: Analyzing trace with hash -590295836, now seen corresponding path program 1 times [2020-12-02 12:14:27,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:27,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994022870] [2020-12-02 12:14:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:27,335 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 12:14:27,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994022870] [2020-12-02 12:14:27,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:27,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:27,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597172375] [2020-12-02 12:14:27,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:27,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:27,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:27,338 INFO L87 Difference]: Start difference. First operand 148 states and 398 transitions. Second operand 5 states. [2020-12-02 12:14:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:27,373 INFO L93 Difference]: Finished difference Result 124 states and 322 transitions. [2020-12-02 12:14:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:27,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:14:27,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:27,375 INFO L225 Difference]: With dead ends: 124 [2020-12-02 12:14:27,375 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:14:27,375 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 12:14:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:14:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:14:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:14:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:14:27,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:14:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:27,377 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:14:27,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:14:27,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:14:27,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-02 12:14:27,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:14:27 BasicIcfg [2020-12-02 12:14:27,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:14:27,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:14:27,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:14:27,382 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:14:27,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:20" (3/4) ... [2020-12-02 12:14:27,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:14:27,393 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:14:27,393 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:14:27,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:14:27,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:14:27,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:14:27,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:14:27,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:27,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:27,441 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:14:27,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:14:27,443 INFO L168 Benchmark]: Toolchain (without parser) took 8797.10 ms. Allocated memory was 56.6 MB in the beginning and 224.4 MB in the end (delta: 167.8 MB). Free memory was 32.0 MB in the beginning and 95.9 MB in the end (delta: -63.9 MB). Peak memory consumption was 104.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,444 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.6 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:27,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.95 ms. Allocated memory is still 56.6 MB. Free memory was 31.8 MB in the beginning and 25.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.27 ms. Allocated memory is still 56.6 MB. Free memory was 25.5 MB in the beginning and 38.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,445 INFO L168 Benchmark]: Boogie Preprocessor took 29.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,446 INFO L168 Benchmark]: RCFGBuilder took 732.47 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.6 MB in the beginning and 38.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,447 INFO L168 Benchmark]: TraceAbstraction took 7234.08 ms. Allocated memory was 69.2 MB in the beginning and 224.4 MB in the end (delta: 155.2 MB). Free memory was 38.4 MB in the beginning and 99.0 MB in the end (delta: -60.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,448 INFO L168 Benchmark]: Witness Printer took 59.95 ms. Allocated memory is still 224.4 MB. Free memory was 99.0 MB in the beginning and 95.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:27,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.6 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 672.95 ms. Allocated memory is still 56.6 MB. Free memory was 31.8 MB in the beginning and 25.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.27 ms. Allocated memory is still 56.6 MB. Free memory was 25.5 MB in the beginning and 38.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 732.47 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.6 MB in the beginning and 38.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7234.08 ms. Allocated memory was 69.2 MB in the beginning and 224.4 MB in the end (delta: 155.2 MB). Free memory was 38.4 MB in the beginning and 99.0 MB in the end (delta: -60.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 16.1 GB. * Witness Printer took 59.95 ms. Allocated memory is still 224.4 MB. Free memory was 99.0 MB in the beginning and 95.9 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 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 102 PlacesBefore, 41 PlacesAfterwards, 91 TransitionsBefore, 29 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 4338 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 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 386 SDtfs, 552 SDslu, 678 SDs, 0 SdLazy, 154 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1492occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 1296 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 11218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...