./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:12:25,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:12:25,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:12:25,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:12:25,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:12:25,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:12:25,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:12:25,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:12:25,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:12:25,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:12:25,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:12:25,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:12:25,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:12:25,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:12:25,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:12:25,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:12:25,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:12:25,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:12:25,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:12:25,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:12:25,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:12:25,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:12:25,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:12:25,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:12:25,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:12:25,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:12:25,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:12:25,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:12:25,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:12:25,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:12:25,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:12:25,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:12:25,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:12:25,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:12:25,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:12:25,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:12:25,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:12:25,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:12:25,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:12:25,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:12:25,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:12:25,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:12:25,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:12:25,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:12:25,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:12:25,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:12:25,451 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:12:25,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:12:25,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:12:25,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:12:25,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:12:25,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:12:25,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:12:25,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:12:25,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:12:25,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:12:25,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:12:25,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:12:25,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:12:25,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:12:25,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:12:25,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:12:25,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:12:25,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:12:25,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:12:25,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:12:25,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:12:25,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:12:25,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:12:25,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:12:25,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:12:25,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d [2020-12-02 12:12:25,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:12:25,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:12:25,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:12:25,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:12:25,972 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:12:25,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2020-12-02 12:12:26,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8246f601e/3ea9e786561840758fff77b8a3862b0d/FLAG62eec7fd7 [2020-12-02 12:12:26,883 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:12:26,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2020-12-02 12:12:26,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8246f601e/3ea9e786561840758fff77b8a3862b0d/FLAG62eec7fd7 [2020-12-02 12:12:27,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8246f601e/3ea9e786561840758fff77b8a3862b0d [2020-12-02 12:12:27,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:12:27,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:12:27,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:27,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:12:27,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:12:27,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf014ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27, skipping insertion in model container [2020-12-02 12:12:27,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:12:27,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:12:27,353 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/safe030_tso.opt.i[949,962] [2020-12-02 12:12:27,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:27,618 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:12:27,633 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/safe030_tso.opt.i[949,962] [2020-12-02 12:12:27,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:27,779 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:12:27,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27 WrapperNode [2020-12-02 12:12:27,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:27,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:27,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:12:27,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:12:27,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:27,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:12:27,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:12:27,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:12:27,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (1/1) ... [2020-12-02 12:12:27,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:12:27,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:12:27,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:12:27,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:12:27,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (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 12:12:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:12:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:12:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:12:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:12:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:12:28,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:12:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:12:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:12:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:12:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:12:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:12:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:12:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:12:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:12:28,112 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 12:12:28,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:12:28,726 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:12:28,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:28 BoogieIcfgContainer [2020-12-02 12:12:28,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:12:28,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:12:28,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:12:28,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:12:28,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:12:27" (1/3) ... [2020-12-02 12:12:28,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23829533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:28, skipping insertion in model container [2020-12-02 12:12:28,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:27" (2/3) ... [2020-12-02 12:12:28,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23829533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:28, skipping insertion in model container [2020-12-02 12:12:28,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:28" (3/3) ... [2020-12-02 12:12:28,741 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2020-12-02 12:12:28,759 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:12:28,759 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:12:28,764 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:12:28,765 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:12:28,804 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,811 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,811 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,812 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,812 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,823 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:28,829 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:12:28,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:12:28,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:12:28,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:12:28,868 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:12:28,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:12:28,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:12:28,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:12:28,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:12:28,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:12:28,883 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:12:28,886 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:12:28,890 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:12:28,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-02 12:12:28,939 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-02 12:12:28,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:12:28,944 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 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:12:28,947 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:12:31,224 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:12:31,421 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:12:31,837 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:12:32,145 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:12:32,256 INFO L131 LiptonReduction]: Checked pairs total: 2703 [2020-12-02 12:12:32,256 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-02 12:12:32,264 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:12:32,297 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:12:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:12:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:12:32,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:32,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:32,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1511125318, now seen corresponding path program 1 times [2020-12-02 12:12:32,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:32,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920151877] [2020-12-02 12:12:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:32,531 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 12:12:32,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920151877] [2020-12-02 12:12:32,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:32,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:32,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489086943] [2020-12-02 12:12:32,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:12:32,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:12:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:12:32,573 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:12:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:32,625 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:12:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:12:32,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:12:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:32,645 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:12:32,646 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:12:32,648 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 12:12:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:12:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:12:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:12:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:12:32,744 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:12:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:32,746 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:12:32,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:12:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:12:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:12:32,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:32,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:32,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:12:32,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:32,753 INFO L82 PathProgramCache]: Analyzing trace with hash -399770224, now seen corresponding path program 1 times [2020-12-02 12:12:32,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:32,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867133842] [2020-12-02 12:12:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:32,955 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 12:12:32,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867133842] [2020-12-02 12:12:32,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:32,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:32,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015235381] [2020-12-02 12:12:32,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:32,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:32,960 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:12:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:33,021 INFO L93 Difference]: Finished difference Result 518 states and 1456 transitions. [2020-12-02 12:12:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:33,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:12:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:33,030 INFO L225 Difference]: With dead ends: 518 [2020-12-02 12:12:33,030 INFO L226 Difference]: Without dead ends: 372 [2020-12-02 12:12:33,031 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 12:12:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-12-02 12:12:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 312. [2020-12-02 12:12:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-02 12:12:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 836 transitions. [2020-12-02 12:12:33,091 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 836 transitions. Word has length 9 [2020-12-02 12:12:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:33,091 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 836 transitions. [2020-12-02 12:12:33,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 836 transitions. [2020-12-02 12:12:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:12:33,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:33,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:33,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:12:33,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:33,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1147875187, now seen corresponding path program 1 times [2020-12-02 12:12:33,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:33,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299905552] [2020-12-02 12:12:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:33,253 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 12:12:33,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299905552] [2020-12-02 12:12:33,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:33,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:33,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391678586] [2020-12-02 12:12:33,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:33,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:33,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:33,257 INFO L87 Difference]: Start difference. First operand 312 states and 836 transitions. Second operand 5 states. [2020-12-02 12:12:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:33,329 INFO L93 Difference]: Finished difference Result 430 states and 1110 transitions. [2020-12-02 12:12:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:33,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:12:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:33,333 INFO L225 Difference]: With dead ends: 430 [2020-12-02 12:12:33,333 INFO L226 Difference]: Without dead ends: 346 [2020-12-02 12:12:33,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-02 12:12:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 290. [2020-12-02 12:12:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-02 12:12:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 762 transitions. [2020-12-02 12:12:33,345 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 762 transitions. Word has length 10 [2020-12-02 12:12:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:33,345 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 762 transitions. [2020-12-02 12:12:33,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 762 transitions. [2020-12-02 12:12:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:12:33,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:33,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:33,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:12:33,353 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash 345922742, now seen corresponding path program 1 times [2020-12-02 12:12:33,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:33,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441126326] [2020-12-02 12:12:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:33,486 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 12:12:33,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441126326] [2020-12-02 12:12:33,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:33,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:33,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626329310] [2020-12-02 12:12:33,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:33,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:33,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:33,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:33,490 INFO L87 Difference]: Start difference. First operand 290 states and 762 transitions. Second operand 5 states. [2020-12-02 12:12:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:33,552 INFO L93 Difference]: Finished difference Result 392 states and 1001 transitions. [2020-12-02 12:12:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:33,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:12:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:33,555 INFO L225 Difference]: With dead ends: 392 [2020-12-02 12:12:33,555 INFO L226 Difference]: Without dead ends: 326 [2020-12-02 12:12:33,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-02 12:12:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2020-12-02 12:12:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-02 12:12:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 698 transitions. [2020-12-02 12:12:33,572 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 698 transitions. Word has length 10 [2020-12-02 12:12:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:33,572 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 698 transitions. [2020-12-02 12:12:33,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 698 transitions. [2020-12-02 12:12:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:12:33,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:33,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:33,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:12:33,576 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2133634442, now seen corresponding path program 1 times [2020-12-02 12:12:33,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:33,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741096570] [2020-12-02 12:12:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:33,681 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 12:12:33,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741096570] [2020-12-02 12:12:33,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:33,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:33,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528451397] [2020-12-02 12:12:33,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:33,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:33,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:33,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:33,685 INFO L87 Difference]: Start difference. First operand 270 states and 698 transitions. Second operand 5 states. [2020-12-02 12:12:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:33,744 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2020-12-02 12:12:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:33,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:12:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:33,748 INFO L225 Difference]: With dead ends: 356 [2020-12-02 12:12:33,748 INFO L226 Difference]: Without dead ends: 312 [2020-12-02 12:12:33,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-02 12:12:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 260. [2020-12-02 12:12:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-02 12:12:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 664 transitions. [2020-12-02 12:12:33,759 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 664 transitions. Word has length 11 [2020-12-02 12:12:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:33,760 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 664 transitions. [2020-12-02 12:12:33,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 664 transitions. [2020-12-02 12:12:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:12:33,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:33,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:33,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:12:33,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:33,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -399190841, now seen corresponding path program 1 times [2020-12-02 12:12:33,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:33,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099658812] [2020-12-02 12:12:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:33,856 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 12:12:33,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099658812] [2020-12-02 12:12:33,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:33,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:33,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347246667] [2020-12-02 12:12:33,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:33,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:33,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:33,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:33,859 INFO L87 Difference]: Start difference. First operand 260 states and 664 transitions. Second operand 5 states. [2020-12-02 12:12:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:33,912 INFO L93 Difference]: Finished difference Result 406 states and 991 transitions. [2020-12-02 12:12:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:33,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:12:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:33,916 INFO L225 Difference]: With dead ends: 406 [2020-12-02 12:12:33,916 INFO L226 Difference]: Without dead ends: 324 [2020-12-02 12:12:33,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-02 12:12:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 244. [2020-12-02 12:12:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-02 12:12:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2020-12-02 12:12:33,928 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2020-12-02 12:12:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:33,929 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2020-12-02 12:12:33,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:33,929 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2020-12-02 12:12:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:12:33,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:33,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:33,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:12:33,931 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:33,931 INFO L82 PathProgramCache]: Analyzing trace with hash -932777299, now seen corresponding path program 1 times [2020-12-02 12:12:33,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:33,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960499301] [2020-12-02 12:12:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:33,985 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 12:12:33,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960499301] [2020-12-02 12:12:33,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:33,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:33,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123445525] [2020-12-02 12:12:33,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:33,988 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand 4 states. [2020-12-02 12:12:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:34,023 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2020-12-02 12:12:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:34,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:12:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:34,025 INFO L225 Difference]: With dead ends: 248 [2020-12-02 12:12:34,026 INFO L226 Difference]: Without dead ends: 187 [2020-12-02 12:12:34,026 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 12:12:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-02 12:12:34,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-12-02 12:12:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-02 12:12:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2020-12-02 12:12:34,034 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2020-12-02 12:12:34,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:34,034 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2020-12-02 12:12:34,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2020-12-02 12:12:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:12:34,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:34,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:34,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:12:34,036 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:34,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:34,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1335013917, now seen corresponding path program 1 times [2020-12-02 12:12:34,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:34,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77233564] [2020-12-02 12:12:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:34,108 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 12:12:34,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77233564] [2020-12-02 12:12:34,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:34,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:34,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494224165] [2020-12-02 12:12:34,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:34,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:34,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:34,111 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand 5 states. [2020-12-02 12:12:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:34,163 INFO L93 Difference]: Finished difference Result 267 states and 539 transitions. [2020-12-02 12:12:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:34,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:12:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:34,166 INFO L225 Difference]: With dead ends: 267 [2020-12-02 12:12:34,166 INFO L226 Difference]: Without dead ends: 221 [2020-12-02 12:12:34,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-02 12:12:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 174. [2020-12-02 12:12:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-02 12:12:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2020-12-02 12:12:34,176 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2020-12-02 12:12:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:34,176 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2020-12-02 12:12:34,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2020-12-02 12:12:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:12:34,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:34,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:34,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:12:34,178 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:34,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1081898830, now seen corresponding path program 1 times [2020-12-02 12:12:34,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:34,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260832044] [2020-12-02 12:12:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:34,229 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 12:12:34,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260832044] [2020-12-02 12:12:34,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:34,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:34,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808692456] [2020-12-02 12:12:34,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:34,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:34,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:34,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:34,232 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand 5 states. [2020-12-02 12:12:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:34,280 INFO L93 Difference]: Finished difference Result 258 states and 510 transitions. [2020-12-02 12:12:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:34,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:12:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:34,282 INFO L225 Difference]: With dead ends: 258 [2020-12-02 12:12:34,282 INFO L226 Difference]: Without dead ends: 212 [2020-12-02 12:12:34,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-02 12:12:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2020-12-02 12:12:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-02 12:12:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2020-12-02 12:12:34,289 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2020-12-02 12:12:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:34,290 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2020-12-02 12:12:34,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2020-12-02 12:12:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:12:34,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:34,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:34,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:12:34,292 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:34,292 INFO L82 PathProgramCache]: Analyzing trace with hash -144595800, now seen corresponding path program 1 times [2020-12-02 12:12:34,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:34,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320587122] [2020-12-02 12:12:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:34,339 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 12:12:34,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320587122] [2020-12-02 12:12:34,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:34,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:34,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860092803] [2020-12-02 12:12:34,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:34,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:34,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:34,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:34,342 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand 5 states. [2020-12-02 12:12:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:34,382 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2020-12-02 12:12:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:12:34,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:12:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:34,383 INFO L225 Difference]: With dead ends: 147 [2020-12-02 12:12:34,384 INFO L226 Difference]: Without dead ends: 96 [2020-12-02 12:12:34,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 12:12:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-02 12:12:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-02 12:12:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-02 12:12:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2020-12-02 12:12:34,388 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2020-12-02 12:12:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:34,389 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2020-12-02 12:12:34,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2020-12-02 12:12:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:12:34,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:34,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:34,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:12:34,390 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:34,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1619656222, now seen corresponding path program 1 times [2020-12-02 12:12:34,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:34,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964905097] [2020-12-02 12:12:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:34,454 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 12:12:34,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964905097] [2020-12-02 12:12:34,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:34,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:12:34,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176431837] [2020-12-02 12:12:34,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:12:34,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:34,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:12:34,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:12:34,457 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand 6 states. [2020-12-02 12:12:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:34,488 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2020-12-02 12:12:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:12:34,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:12:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:34,488 INFO L225 Difference]: With dead ends: 82 [2020-12-02 12:12:34,488 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:12:34,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:12:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:12:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:12:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:12:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:12:34,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:12:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:34,490 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:12:34,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:12:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:12:34,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:12:34,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:12:34,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:12:34 BasicIcfg [2020-12-02 12:12:34,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:12:34,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:12:34,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:12:34,495 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:12:34,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:28" (3/4) ... [2020-12-02 12:12:34,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:12:34,507 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:12:34,507 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:12:34,507 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:12:34,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:12:34,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:12:34,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:34,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:34,596 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:12:34,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:12:34,598 INFO L168 Benchmark]: Toolchain (without parser) took 7519.19 ms. Allocated memory was 52.4 MB in the beginning and 136.3 MB in the end (delta: 83.9 MB). Free memory was 35.0 MB in the beginning and 50.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:34,598 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:34,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.11 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 26.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:34,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.01 ms. Allocated memory is still 52.4 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:34,604 INFO L168 Benchmark]: Boogie Preprocessor took 64.03 ms. Allocated memory is still 52.4 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:34,606 INFO L168 Benchmark]: RCFGBuilder took 780.23 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 40.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:34,607 INFO L168 Benchmark]: TraceAbstraction took 5762.85 ms. Allocated memory was 62.9 MB in the beginning and 136.3 MB in the end (delta: 73.4 MB). Free memory was 39.6 MB in the beginning and 53.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:34,607 INFO L168 Benchmark]: Witness Printer took 101.96 ms. Allocated memory is still 136.3 MB. Free memory was 53.5 MB in the beginning and 50.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:34,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 702.11 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 26.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.01 ms. Allocated memory is still 52.4 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.03 ms. Allocated memory is still 52.4 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 780.23 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 40.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5762.85 ms. Allocated memory was 62.9 MB in the beginning and 136.3 MB in the end (delta: 73.4 MB). Free memory was 39.6 MB in the beginning and 53.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 101.96 ms. Allocated memory is still 136.3 MB. Free memory was 53.5 MB in the beginning and 50.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 805 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2703 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: 5.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 299 SDtfs, 274 SDslu, 492 SDs, 0 SdLazy, 170 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 398 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...