./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:14:06,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:14:06,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:14:06,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:14:06,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:14:06,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:14:06,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:14:06,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:14:06,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:14:06,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:14:06,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:14:06,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:14:06,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:14:06,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:14:06,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:14:06,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:14:06,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:14:06,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:14:06,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:14:06,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:14:06,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:14:06,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:14:06,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:14:06,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:14:06,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:14:06,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:14:06,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:14:06,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:14:06,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:14:06,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:14:06,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:14:06,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:14:06,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:14:06,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:14:06,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:14:06,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:14:06,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:14:06,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:14:06,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:14:06,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:14:06,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:14:06,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:14:06,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:14:06,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:14:06,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:14:06,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:14:06,726 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:14:06,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:14:06,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:14:06,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:14:06,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:14:06,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:14:06,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:14:06,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:14:06,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:14:06,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:14:06,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:14:06,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:14:06,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:14:06,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:14:06,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:14:06,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:14:06,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:14:06,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:06,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:14:06,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:14:06,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:14:06,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:14:06,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:14:06,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:14:06,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:14:06,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 [2020-12-02 12:14:07,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:14:07,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:14:07,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:14:07,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:14:07,214 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:14:07,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-12-02 12:14:07,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704cbef72/71bfea9bc9ed46fc874a76200ca82eca/FLAG29c7eb419 [2020-12-02 12:14:08,058 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:14:08,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-12-02 12:14:08,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704cbef72/71bfea9bc9ed46fc874a76200ca82eca/FLAG29c7eb419 [2020-12-02 12:14:08,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/704cbef72/71bfea9bc9ed46fc874a76200ca82eca [2020-12-02 12:14:08,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:14:08,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:14:08,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:08,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:14:08,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:14:08,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:08" (1/1) ... [2020-12-02 12:14:08,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1310ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:08, skipping insertion in model container [2020-12-02 12:14:08,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:08" (1/1) ... [2020-12-02 12:14:08,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:14:08,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:14:08,719 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_pso.oepc.i[950,963] [2020-12-02 12:14:09,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:09,014 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:14:09,032 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_pso.oepc.i[950,963] [2020-12-02 12:14:09,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:09,231 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:14:09,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09 WrapperNode [2020-12-02 12:14:09,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:09,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:09,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:14:09,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:14:09,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:09,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:14:09,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:14:09,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:14:09,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (1/1) ... [2020-12-02 12:14:09,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:14:09,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:14:09,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:14:09,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:14:09,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (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 12:14:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:14:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:14:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:14:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:14:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:14:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:14:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:14:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:14:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:14:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:14:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:14:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:14:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:14:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:14:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:14:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:14:09,435 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 12:14:09,868 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:14:09,869 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:14:09,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:09 BoogieIcfgContainer [2020-12-02 12:14:09,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:14:09,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:14:09,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:14:09,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:14:09,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:14:08" (1/3) ... [2020-12-02 12:14:09,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da055ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:09, skipping insertion in model container [2020-12-02 12:14:09,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:09" (2/3) ... [2020-12-02 12:14:09,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da055ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:09, skipping insertion in model container [2020-12-02 12:14:09,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:09" (3/3) ... [2020-12-02 12:14:09,882 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-12-02 12:14:09,899 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:14:09,900 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:14:09,904 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:14:09,905 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:14:09,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,944 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,945 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,945 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,946 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,946 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,947 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,947 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,948 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,949 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,949 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,949 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,949 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,950 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,950 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,952 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,953 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,953 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,953 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,954 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,954 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,954 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,954 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,955 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,955 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,955 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,956 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,958 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,965 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,968 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,969 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,969 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,971 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,972 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:09,974 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:14:09,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:14:10,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:14:10,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:14:10,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:14:10,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:14:10,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:14:10,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:14:10,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:14:10,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:14:10,039 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:14:10,041 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:10,045 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:10,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:10,118 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2020-12-02 12:14:10,119 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:14:10,127 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 12:14:10,133 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2020-12-02 12:14:13,225 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-02 12:14:13,724 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-02 12:14:13,846 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-02 12:14:14,111 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-02 12:14:14,234 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-02 12:14:14,241 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2020-12-02 12:14:14,241 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-02 12:14:14,251 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-12-02 12:14:14,366 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-12-02 12:14:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-12-02 12:14:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:14:14,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:14,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:14,381 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:14,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2020-12-02 12:14:14,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:14,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518119097] [2020-12-02 12:14:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:14,619 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 12:14:14,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518119097] [2020-12-02 12:14:14,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:14,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:14,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032424540] [2020-12-02 12:14:14,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:14:14,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:14,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:14:14,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:14:14,655 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-12-02 12:14:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:14,730 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-12-02 12:14:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:14:14,732 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 12:14:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:14,779 INFO L225 Difference]: With dead ends: 1450 [2020-12-02 12:14:14,780 INFO L226 Difference]: Without dead ends: 1194 [2020-12-02 12:14:14,781 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 12:14:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-02 12:14:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-12-02 12:14:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-02 12:14:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-12-02 12:14:14,940 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-12-02 12:14:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:14,944 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-12-02 12:14:14,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:14:14,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-12-02 12:14:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:14:14,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:14,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:14,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:14:14,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:14,954 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2020-12-02 12:14:14,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:14,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219911484] [2020-12-02 12:14:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:15,173 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 12:14:15,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219911484] [2020-12-02 12:14:15,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:15,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:15,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069690320] [2020-12-02 12:14:15,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:14:15,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:14:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:15,181 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-12-02 12:14:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:15,243 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2020-12-02 12:14:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:15,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:14:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:15,256 INFO L225 Difference]: With dead ends: 1448 [2020-12-02 12:14:15,257 INFO L226 Difference]: Without dead ends: 1192 [2020-12-02 12:14:15,258 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 12:14:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-02 12:14:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2020-12-02 12:14:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-12-02 12:14:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2020-12-02 12:14:15,367 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2020-12-02 12:14:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:15,367 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2020-12-02 12:14:15,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:14:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2020-12-02 12:14:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:15,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:15,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:15,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:14:15,372 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:15,372 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2020-12-02 12:14:15,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:15,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91911651] [2020-12-02 12:14:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:15,464 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 12:14:15,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91911651] [2020-12-02 12:14:15,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:15,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:15,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434852435] [2020-12-02 12:14:15,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:15,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:15,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:15,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:15,467 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2020-12-02 12:14:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:15,522 INFO L93 Difference]: Finished difference Result 1318 states and 4624 transitions. [2020-12-02 12:14:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:15,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:15,534 INFO L225 Difference]: With dead ends: 1318 [2020-12-02 12:14:15,534 INFO L226 Difference]: Without dead ends: 1066 [2020-12-02 12:14:15,535 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 12:14:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-12-02 12:14:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-12-02 12:14:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-12-02 12:14:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-12-02 12:14:15,589 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 12 [2020-12-02 12:14:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:15,590 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-12-02 12:14:15,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-12-02 12:14:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:15,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:15,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:15,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:14:15,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:15,599 INFO L82 PathProgramCache]: Analyzing trace with hash -861902487, now seen corresponding path program 1 times [2020-12-02 12:14:15,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:15,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746581285] [2020-12-02 12:14:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:15,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746581285] [2020-12-02 12:14:15,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:15,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:15,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084308519] [2020-12-02 12:14:15,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:15,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:15,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:15,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:15,796 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 5 states. [2020-12-02 12:14:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:15,951 INFO L93 Difference]: Finished difference Result 1819 states and 6368 transitions. [2020-12-02 12:14:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:15,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:15,966 INFO L225 Difference]: With dead ends: 1819 [2020-12-02 12:14:15,967 INFO L226 Difference]: Without dead ends: 1276 [2020-12-02 12:14:15,967 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 12:14:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-12-02 12:14:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1276. [2020-12-02 12:14:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-12-02 12:14:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4536 transitions. [2020-12-02 12:14:16,039 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4536 transitions. Word has length 12 [2020-12-02 12:14:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:16,040 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 4536 transitions. [2020-12-02 12:14:16,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4536 transitions. [2020-12-02 12:14:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:16,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:16,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:16,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:14:16,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:16,045 INFO L82 PathProgramCache]: Analyzing trace with hash -950335427, now seen corresponding path program 1 times [2020-12-02 12:14:16,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:16,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083586896] [2020-12-02 12:14:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:16,119 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 12:14:16,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083586896] [2020-12-02 12:14:16,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:16,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:16,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045497757] [2020-12-02 12:14:16,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:16,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:16,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:16,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:16,123 INFO L87 Difference]: Start difference. First operand 1276 states and 4536 transitions. Second operand 5 states. [2020-12-02 12:14:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:16,250 INFO L93 Difference]: Finished difference Result 2281 states and 7855 transitions. [2020-12-02 12:14:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:16,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:16,293 INFO L225 Difference]: With dead ends: 2281 [2020-12-02 12:14:16,293 INFO L226 Difference]: Without dead ends: 1840 [2020-12-02 12:14:16,295 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 12:14:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2020-12-02 12:14:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1264. [2020-12-02 12:14:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1264 states. [2020-12-02 12:14:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 4447 transitions. [2020-12-02 12:14:16,368 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 4447 transitions. Word has length 13 [2020-12-02 12:14:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:16,369 INFO L481 AbstractCegarLoop]: Abstraction has 1264 states and 4447 transitions. [2020-12-02 12:14:16,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 4447 transitions. [2020-12-02 12:14:16,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:16,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:16,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:16,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:14:16,373 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:16,373 INFO L82 PathProgramCache]: Analyzing trace with hash -950246054, now seen corresponding path program 1 times [2020-12-02 12:14:16,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:16,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864729634] [2020-12-02 12:14:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:16,489 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 12:14:16,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864729634] [2020-12-02 12:14:16,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:16,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:16,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378627419] [2020-12-02 12:14:16,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:16,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:16,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:16,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:16,493 INFO L87 Difference]: Start difference. First operand 1264 states and 4447 transitions. Second operand 5 states. [2020-12-02 12:14:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:16,546 INFO L93 Difference]: Finished difference Result 1354 states and 4639 transitions. [2020-12-02 12:14:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:16,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:16,559 INFO L225 Difference]: With dead ends: 1354 [2020-12-02 12:14:16,559 INFO L226 Difference]: Without dead ends: 1174 [2020-12-02 12:14:16,560 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 12:14:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-12-02 12:14:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1084. [2020-12-02 12:14:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-12-02 12:14:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3766 transitions. [2020-12-02 12:14:16,613 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3766 transitions. Word has length 13 [2020-12-02 12:14:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:16,614 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 3766 transitions. [2020-12-02 12:14:16,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3766 transitions. [2020-12-02 12:14:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:14:16,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:16,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:16,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:14:16,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash 128736516, now seen corresponding path program 1 times [2020-12-02 12:14:16,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:16,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320226297] [2020-12-02 12:14:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:16,724 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 12:14:16,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320226297] [2020-12-02 12:14:16,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:16,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:16,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451993629] [2020-12-02 12:14:16,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:16,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:16,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:16,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:16,727 INFO L87 Difference]: Start difference. First operand 1084 states and 3766 transitions. Second operand 6 states. [2020-12-02 12:14:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:16,805 INFO L93 Difference]: Finished difference Result 1309 states and 4471 transitions. [2020-12-02 12:14:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:16,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:14:16,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:16,812 INFO L225 Difference]: With dead ends: 1309 [2020-12-02 12:14:16,812 INFO L226 Difference]: Without dead ends: 682 [2020-12-02 12:14:16,813 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 12:14:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-12-02 12:14:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2020-12-02 12:14:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-12-02 12:14:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2240 transitions. [2020-12-02 12:14:16,840 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2240 transitions. Word has length 14 [2020-12-02 12:14:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:16,841 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 2240 transitions. [2020-12-02 12:14:16,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2240 transitions. [2020-12-02 12:14:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:14:16,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:16,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:16,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:14:16,844 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:16,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:16,844 INFO L82 PathProgramCache]: Analyzing trace with hash 100524439, now seen corresponding path program 1 times [2020-12-02 12:14:16,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:16,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800068224] [2020-12-02 12:14:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:16,907 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 12:14:16,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800068224] [2020-12-02 12:14:16,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:16,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:16,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754550584] [2020-12-02 12:14:16,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:16,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:16,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:16,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:16,910 INFO L87 Difference]: Start difference. First operand 682 states and 2240 transitions. Second operand 6 states. [2020-12-02 12:14:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:16,976 INFO L93 Difference]: Finished difference Result 874 states and 2784 transitions. [2020-12-02 12:14:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:16,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:14:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:16,980 INFO L225 Difference]: With dead ends: 874 [2020-12-02 12:14:16,980 INFO L226 Difference]: Without dead ends: 394 [2020-12-02 12:14:16,981 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 12:14:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-02 12:14:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-02 12:14:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-02 12:14:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1168 transitions. [2020-12-02 12:14:16,996 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1168 transitions. Word has length 14 [2020-12-02 12:14:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:16,996 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1168 transitions. [2020-12-02 12:14:16,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1168 transitions. [2020-12-02 12:14:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:14:16,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:16,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:16,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:14:16,999 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1364189748, now seen corresponding path program 1 times [2020-12-02 12:14:16,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:17,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932168947] [2020-12-02 12:14:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:17,063 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 12:14:17,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932168947] [2020-12-02 12:14:17,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:17,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:17,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962522033] [2020-12-02 12:14:17,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:17,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:17,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:17,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:17,066 INFO L87 Difference]: Start difference. First operand 394 states and 1168 transitions. Second operand 6 states. [2020-12-02 12:14:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:17,120 INFO L93 Difference]: Finished difference Result 526 states and 1504 transitions. [2020-12-02 12:14:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:17,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:14:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:17,123 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:14:17,124 INFO L226 Difference]: Without dead ends: 214 [2020-12-02 12:14:17,124 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 12:14:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-02 12:14:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-02 12:14:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-02 12:14:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 566 transitions. [2020-12-02 12:14:17,132 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 566 transitions. Word has length 16 [2020-12-02 12:14:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:17,132 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 566 transitions. [2020-12-02 12:14:17,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 566 transitions. [2020-12-02 12:14:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:14:17,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:17,134 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 12:14:17,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:14:17,134 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:17,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1493234184, now seen corresponding path program 1 times [2020-12-02 12:14:17,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:17,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170073312] [2020-12-02 12:14:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:17,197 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 12:14:17,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170073312] [2020-12-02 12:14:17,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:17,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:17,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656475419] [2020-12-02 12:14:17,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:17,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:17,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:17,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:17,200 INFO L87 Difference]: Start difference. First operand 214 states and 566 transitions. Second operand 6 states. [2020-12-02 12:14:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:17,246 INFO L93 Difference]: Finished difference Result 190 states and 490 transitions. [2020-12-02 12:14:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:17,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-02 12:14:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:17,247 INFO L225 Difference]: With dead ends: 190 [2020-12-02 12:14:17,247 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:14:17,248 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 12:14:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:14:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:14:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:14:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:14:17,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:14:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:17,249 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:14:17,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:14:17,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:14:17,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:14:17,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:14:17 BasicIcfg [2020-12-02 12:14:17,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:14:17,255 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:14:17,255 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:14:17,256 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:14:17,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:09" (3/4) ... [2020-12-02 12:14:17,260 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:14:17,267 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:14:17,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:14:17,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:14:17,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:14:17,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:14:17,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:14:17,274 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:17,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:17,320 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:14:17,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:14:17,322 INFO L168 Benchmark]: Toolchain (without parser) took 8959.07 ms. Allocated memory was 56.6 MB in the beginning and 172.0 MB in the end (delta: 115.3 MB). Free memory was 32.2 MB in the beginning and 129.0 MB in the end (delta: -96.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,322 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 41.9 MB. Free memory is still 22.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:17,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 867.62 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 25.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.67 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 38.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,324 INFO L168 Benchmark]: Boogie Preprocessor took 30.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 37.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,325 INFO L168 Benchmark]: RCFGBuilder took 547.91 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 39.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,325 INFO L168 Benchmark]: TraceAbstraction took 7380.81 ms. Allocated memory was 69.2 MB in the beginning and 172.0 MB in the end (delta: 102.8 MB). Free memory was 38.7 MB in the beginning and 132.1 MB in the end (delta: -93.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,326 INFO L168 Benchmark]: Witness Printer took 65.28 ms. Allocated memory is still 172.0 MB. Free memory was 132.1 MB in the beginning and 129.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:17,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 41.9 MB. Free memory is still 22.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 867.62 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 25.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.67 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 38.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 37.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.91 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 39.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7380.81 ms. Allocated memory was 69.2 MB in the beginning and 172.0 MB in the end (delta: 102.8 MB). Free memory was 38.7 MB in the beginning and 132.1 MB in the end (delta: -93.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.28 ms. Allocated memory is still 172.0 MB. Free memory was 132.1 MB in the beginning and 129.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 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: 7.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 319 SDtfs, 469 SDslu, 573 SDs, 0 SdLazy, 128 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 666 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 9537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...