./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe020_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/safe020_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 fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:09:49,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:09:49,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:09:50,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:09:50,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:09:50,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:09:50,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:09:50,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:09:50,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:09:50,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:09:50,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:09:50,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:09:50,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:09:50,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:09:50,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:09:50,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:09:50,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:09:50,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:09:50,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:09:50,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:09:50,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:09:50,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:09:50,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:09:50,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:09:50,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:09:50,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:09:50,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:09:50,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:09:50,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:09:50,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:09:50,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:09:50,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:09:50,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:09:50,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:09:50,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:09:50,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:09:50,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:09:50,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:09:50,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:09:50,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:09:50,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:09:50,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:09:50,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:09:50,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:09:50,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:09:50,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:09:50,127 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:09:50,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:09:50,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:09:50,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:09:50,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:09:50,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:09:50,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:09:50,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:09:50,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:09:50,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:09:50,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:09:50,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:09:50,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:09:50,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:09:50,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:09:50,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:09:50,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:09:50,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:09:50,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:09:50,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:09:50,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:09:50,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:09:50,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:09:50,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:09:50,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:09:50,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d [2020-12-02 12:09:50,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:09:50,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:09:50,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:09:50,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:09:50,572 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:09:50,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-12-02 12:09:50,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3e6cb96/0eeb88c11ce14623b583289216b73742/FLAG94102f080 [2020-12-02 12:09:51,297 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:09:51,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-12-02 12:09:51,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3e6cb96/0eeb88c11ce14623b583289216b73742/FLAG94102f080 [2020-12-02 12:09:51,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3e6cb96/0eeb88c11ce14623b583289216b73742 [2020-12-02 12:09:51,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:09:51,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:09:51,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:51,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:09:51,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:09:51,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:51" (1/1) ... [2020-12-02 12:09:51,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee2e447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:51, skipping insertion in model container [2020-12-02 12:09:51,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:51" (1/1) ... [2020-12-02 12:09:51,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:09:51,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:09:51,923 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i[950,963] [2020-12-02 12:09:52,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:52,233 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:09:52,251 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i[950,963] [2020-12-02 12:09:52,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:52,445 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:09:52,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52 WrapperNode [2020-12-02 12:09:52,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:52,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:52,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:09:52,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:09:52,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:52,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:09:52,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:09:52,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:09:52,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... [2020-12-02 12:09:52,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:09:52,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:09:52,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:09:52,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:09:52,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:09:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:09:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:09:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:09:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:09:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:09:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:09:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:09:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:09:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:09:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:09:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:09:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:09:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:09:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:09:52,671 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:09:53,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:09:53,109 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:09:53,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:53 BoogieIcfgContainer [2020-12-02 12:09:53,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:09:53,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:09:53,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:09:53,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:09:53,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:09:51" (1/3) ... [2020-12-02 12:09:53,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f2026c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:53, skipping insertion in model container [2020-12-02 12:09:53,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:52" (2/3) ... [2020-12-02 12:09:53,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f2026c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:53, skipping insertion in model container [2020-12-02 12:09:53,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:53" (3/3) ... [2020-12-02 12:09:53,125 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-12-02 12:09:53,147 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:09:53,147 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:09:53,151 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:09:53,152 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:09:53,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,200 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,200 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,204 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,204 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,204 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,208 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,208 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,212 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,225 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,225 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:53,235 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:09:53,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:09:53,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:09:53,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:09:53,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:09:53,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:09:53,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:09:53,298 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:09:53,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:09:53,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:09:53,326 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:09:53,329 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:09:53,333 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:09:53,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-02 12:09:53,430 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-02 12:09:53,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:09:53,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-02 12:09:53,449 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-02 12:09:56,030 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:09:56,302 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:09:56,537 INFO L131 LiptonReduction]: Checked pairs total: 2226 [2020-12-02 12:09:56,538 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-02 12:09:56,545 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-02 12:09:56,569 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-02 12:09:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-02 12:09:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:09:56,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:56,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:56,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:56,587 INFO L82 PathProgramCache]: Analyzing trace with hash -938351108, now seen corresponding path program 1 times [2020-12-02 12:09:56,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:56,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852759755] [2020-12-02 12:09:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:56,926 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 12:09:56,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852759755] [2020-12-02 12:09:56,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:56,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:09:56,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982433990] [2020-12-02 12:09:56,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:09:56,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:56,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:09:56,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:56,963 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-02 12:09:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,044 INFO L93 Difference]: Finished difference Result 316 states and 835 transitions. [2020-12-02 12:09:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:09:57,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:09:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,075 INFO L225 Difference]: With dead ends: 316 [2020-12-02 12:09:57,076 INFO L226 Difference]: Without dead ends: 205 [2020-12-02 12:09:57,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-02 12:09:57,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2020-12-02 12:09:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-02 12:09:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 485 transitions. [2020-12-02 12:09:57,191 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 485 transitions. Word has length 8 [2020-12-02 12:09:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,192 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 485 transitions. [2020-12-02 12:09:57,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:09:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 485 transitions. [2020-12-02 12:09:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:09:57,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:09:57,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash 395784729, now seen corresponding path program 1 times [2020-12-02 12:09:57,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925996834] [2020-12-02 12:09:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,359 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 12:09:57,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925996834] [2020-12-02 12:09:57,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:57,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713513138] [2020-12-02 12:09:57,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:57,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:57,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:57,364 INFO L87 Difference]: Start difference. First operand 187 states and 485 transitions. Second operand 4 states. [2020-12-02 12:09:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,385 INFO L93 Difference]: Finished difference Result 196 states and 488 transitions. [2020-12-02 12:09:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:57,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:09:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,389 INFO L225 Difference]: With dead ends: 196 [2020-12-02 12:09:57,389 INFO L226 Difference]: Without dead ends: 196 [2020-12-02 12:09:57,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-02 12:09:57,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2020-12-02 12:09:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-02 12:09:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 455 transitions. [2020-12-02 12:09:57,406 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 455 transitions. Word has length 9 [2020-12-02 12:09:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,406 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 455 transitions. [2020-12-02 12:09:57,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 455 transitions. [2020-12-02 12:09:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:09:57,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:09:57,409 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,410 INFO L82 PathProgramCache]: Analyzing trace with hash 975885903, now seen corresponding path program 1 times [2020-12-02 12:09:57,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32776413] [2020-12-02 12:09:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,465 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 12:09:57,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32776413] [2020-12-02 12:09:57,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:57,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085525122] [2020-12-02 12:09:57,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:57,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:57,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:57,469 INFO L87 Difference]: Start difference. First operand 178 states and 455 transitions. Second operand 4 states. [2020-12-02 12:09:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,490 INFO L93 Difference]: Finished difference Result 187 states and 464 transitions. [2020-12-02 12:09:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:57,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:09:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,493 INFO L225 Difference]: With dead ends: 187 [2020-12-02 12:09:57,493 INFO L226 Difference]: Without dead ends: 187 [2020-12-02 12:09:57,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-02 12:09:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-12-02 12:09:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-02 12:09:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 431 transitions. [2020-12-02 12:09:57,506 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 431 transitions. Word has length 9 [2020-12-02 12:09:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,506 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 431 transitions. [2020-12-02 12:09:57,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 431 transitions. [2020-12-02 12:09:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:09:57,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:09:57,508 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,508 INFO L82 PathProgramCache]: Analyzing trace with hash -615576110, now seen corresponding path program 1 times [2020-12-02 12:09:57,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594096156] [2020-12-02 12:09:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,558 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 12:09:57,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594096156] [2020-12-02 12:09:57,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:57,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809597168] [2020-12-02 12:09:57,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:57,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:57,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:57,561 INFO L87 Difference]: Start difference. First operand 169 states and 431 transitions. Second operand 4 states. [2020-12-02 12:09:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,596 INFO L93 Difference]: Finished difference Result 209 states and 515 transitions. [2020-12-02 12:09:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:57,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:09:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,599 INFO L225 Difference]: With dead ends: 209 [2020-12-02 12:09:57,599 INFO L226 Difference]: Without dead ends: 197 [2020-12-02 12:09:57,599 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 12:09:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-02 12:09:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2020-12-02 12:09:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-02 12:09:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 446 transitions. [2020-12-02 12:09:57,609 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 446 transitions. Word has length 10 [2020-12-02 12:09:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,609 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 446 transitions. [2020-12-02 12:09:57,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 446 transitions. [2020-12-02 12:09:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:09:57,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:09:57,611 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,612 INFO L82 PathProgramCache]: Analyzing trace with hash 187690604, now seen corresponding path program 2 times [2020-12-02 12:09:57,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960718646] [2020-12-02 12:09:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,665 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 12:09:57,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960718646] [2020-12-02 12:09:57,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:57,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418987074] [2020-12-02 12:09:57,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:57,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:57,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:57,668 INFO L87 Difference]: Start difference. First operand 175 states and 446 transitions. Second operand 5 states. [2020-12-02 12:09:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,697 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2020-12-02 12:09:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:57,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:09:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,699 INFO L225 Difference]: With dead ends: 234 [2020-12-02 12:09:57,699 INFO L226 Difference]: Without dead ends: 144 [2020-12-02 12:09:57,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-02 12:09:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2020-12-02 12:09:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-02 12:09:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 315 transitions. [2020-12-02 12:09:57,706 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 315 transitions. Word has length 10 [2020-12-02 12:09:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,706 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 315 transitions. [2020-12-02 12:09:57,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 315 transitions. [2020-12-02 12:09:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:09:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:09:57,708 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1342775669, now seen corresponding path program 1 times [2020-12-02 12:09:57,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653249972] [2020-12-02 12:09:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:09:57,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653249972] [2020-12-02 12:09:57,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:57,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341370473] [2020-12-02 12:09:57,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:57,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:57,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:57,768 INFO L87 Difference]: Start difference. First operand 132 states and 315 transitions. Second operand 4 states. [2020-12-02 12:09:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,803 INFO L93 Difference]: Finished difference Result 155 states and 339 transitions. [2020-12-02 12:09:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:57,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:09:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,805 INFO L225 Difference]: With dead ends: 155 [2020-12-02 12:09:57,805 INFO L226 Difference]: Without dead ends: 115 [2020-12-02 12:09:57,805 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 12:09:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-02 12:09:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-02 12:09:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-02 12:09:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 251 transitions. [2020-12-02 12:09:57,810 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 251 transitions. Word has length 11 [2020-12-02 12:09:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,810 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 251 transitions. [2020-12-02 12:09:57,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 251 transitions. [2020-12-02 12:09:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:09:57,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:09:57,812 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1283997363, now seen corresponding path program 1 times [2020-12-02 12:09:57,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581806260] [2020-12-02 12:09:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,868 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 12:09:57,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581806260] [2020-12-02 12:09:57,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:57,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384644217] [2020-12-02 12:09:57,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:57,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:57,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:57,871 INFO L87 Difference]: Start difference. First operand 115 states and 251 transitions. Second operand 5 states. [2020-12-02 12:09:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:57,910 INFO L93 Difference]: Finished difference Result 116 states and 234 transitions. [2020-12-02 12:09:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:57,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:09:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:57,912 INFO L225 Difference]: With dead ends: 116 [2020-12-02 12:09:57,912 INFO L226 Difference]: Without dead ends: 89 [2020-12-02 12:09:57,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-02 12:09:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-02 12:09:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-02 12:09:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 176 transitions. [2020-12-02 12:09:57,916 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 176 transitions. Word has length 12 [2020-12-02 12:09:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:57,917 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 176 transitions. [2020-12-02 12:09:57,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 176 transitions. [2020-12-02 12:09:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:09:57,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:57,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:57,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:09:57,918 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1633997476, now seen corresponding path program 1 times [2020-12-02 12:09:57,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:57,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055333507] [2020-12-02 12:09:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:57,981 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 12:09:57,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055333507] [2020-12-02 12:09:57,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:57,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:57,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13656828] [2020-12-02 12:09:57,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:09:57,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:57,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:09:57,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:57,983 INFO L87 Difference]: Start difference. First operand 89 states and 176 transitions. Second operand 6 states. [2020-12-02 12:09:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:58,027 INFO L93 Difference]: Finished difference Result 85 states and 166 transitions. [2020-12-02 12:09:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:09:58,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:09:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:58,028 INFO L225 Difference]: With dead ends: 85 [2020-12-02 12:09:58,028 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 12:09:58,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:09:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 12:09:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-02 12:09:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-02 12:09:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 83 transitions. [2020-12-02 12:09:58,031 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 83 transitions. Word has length 14 [2020-12-02 12:09:58,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:58,031 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 83 transitions. [2020-12-02 12:09:58,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:09:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 83 transitions. [2020-12-02 12:09:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:09:58,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:58,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:58,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:09:58,032 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:58,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:58,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1390745954, now seen corresponding path program 1 times [2020-12-02 12:09:58,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:58,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83208645] [2020-12-02 12:09:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:58,071 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 12:09:58,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83208645] [2020-12-02 12:09:58,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:58,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:58,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157550343] [2020-12-02 12:09:58,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:09:58,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:58,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:09:58,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:58,073 INFO L87 Difference]: Start difference. First operand 46 states and 83 transitions. Second operand 3 states. [2020-12-02 12:09:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:58,081 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-12-02 12:09:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:09:58,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-02 12:09:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:58,082 INFO L225 Difference]: With dead ends: 59 [2020-12-02 12:09:58,082 INFO L226 Difference]: Without dead ends: 33 [2020-12-02 12:09:58,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-02 12:09:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-02 12:09:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-02 12:09:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-02 12:09:58,084 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-12-02 12:09:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:58,084 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-02 12:09:58,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:09:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-02 12:09:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:09:58,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:58,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:58,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:09:58,085 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1414383408, now seen corresponding path program 2 times [2020-12-02 12:09:58,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538029051] [2020-12-02 12:09:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:58,128 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 12:09:58,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538029051] [2020-12-02 12:09:58,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:58,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:58,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818810265] [2020-12-02 12:09:58,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:58,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:58,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:58,130 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-02 12:09:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:58,142 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-12-02 12:09:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:58,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-02 12:09:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:58,142 INFO L225 Difference]: With dead ends: 32 [2020-12-02 12:09:58,143 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:09:58,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:09:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:09:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:09:58,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:09:58,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:09:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:58,144 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:09:58,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:09:58,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:09:58,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:09:58,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:09:58 BasicIcfg [2020-12-02 12:09:58,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:09:58,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:09:58,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:09:58,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:09:58,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:53" (3/4) ... [2020-12-02 12:09:58,154 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:09:58,161 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:09:58,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:09:58,162 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:09:58,167 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:09:58,167 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:09:58,167 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:58,167 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:58,215 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:09:58,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:09:58,219 INFO L168 Benchmark]: Toolchain (without parser) took 6577.97 ms. Allocated memory was 44.0 MB in the beginning and 127.9 MB in the end (delta: 83.9 MB). Free memory was 28.6 MB in the beginning and 48.4 MB in the end (delta: -19.8 MB). Peak memory consumption was 62.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:58,220 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 28.7 MB in the beginning and 28.7 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:58,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.23 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 30.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:58,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.85 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 28.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:58,222 INFO L168 Benchmark]: Boogie Preprocessor took 31.21 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 27.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:58,224 INFO L168 Benchmark]: RCFGBuilder took 564.73 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 34.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:58,226 INFO L168 Benchmark]: TraceAbstraction took 5032.65 ms. Allocated memory was 54.5 MB in the beginning and 127.9 MB in the end (delta: 73.4 MB). Free memory was 34.2 MB in the beginning and 51.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:58,227 INFO L168 Benchmark]: Witness Printer took 65.93 ms. Allocated memory is still 127.9 MB. Free memory was 51.6 MB in the beginning and 48.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:58,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 28.7 MB in the beginning and 28.7 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 805.23 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 30.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.85 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 28.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.21 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 27.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 564.73 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 34.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5032.65 ms. Allocated memory was 54.5 MB in the beginning and 127.9 MB in the end (delta: 73.4 MB). Free memory was 34.2 MB in the beginning and 51.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. * Witness Printer took 65.93 ms. Allocated memory is still 127.9 MB. Free memory was 51.6 MB in the beginning and 48.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 727 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2226 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 166 SDtfs, 180 SDslu, 215 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...