./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_pso.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/safe000_pso.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 2a065c13e78ed395198628ca646c9399c45083a0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:04:32,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:04:32,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:04:32,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:04:32,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:04:32,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:04:32,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:04:32,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:04:32,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:04:32,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:04:32,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:04:32,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:04:32,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:04:32,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:04:32,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:04:32,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:04:32,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:04:32,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:04:32,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:04:32,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:04:32,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:04:32,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:04:32,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:04:32,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:04:32,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:04:32,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:04:32,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:04:32,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:04:32,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:04:32,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:04:32,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:04:32,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:04:32,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:04:32,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:04:32,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:04:32,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:04:32,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:04:32,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:04:32,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:04:32,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:04:32,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:04:32,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:04:33,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:04:33,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:04:33,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:04:33,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:04:33,011 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:04:33,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:04:33,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:04:33,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:04:33,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:04:33,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:04:33,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:04:33,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:04:33,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:04:33,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:04:33,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:04:33,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:04:33,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:04:33,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:04:33,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:04:33,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:04:33,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:04:33,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:04:33,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:04:33,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:04:33,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:04:33,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:04:33,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:04:33,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:04:33,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:04:33,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a065c13e78ed395198628ca646c9399c45083a0 [2020-12-02 12:04:33,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:04:33,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:04:33,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:04:33,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:04:33,524 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:04:33,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-12-02 12:04:33,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20aed69f6/4f70788bdc744134b49093a3e6e0f34d/FLAG3c5269ad5 [2020-12-02 12:04:34,467 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:04:34,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-12-02 12:04:34,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20aed69f6/4f70788bdc744134b49093a3e6e0f34d/FLAG3c5269ad5 [2020-12-02 12:04:34,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20aed69f6/4f70788bdc744134b49093a3e6e0f34d [2020-12-02 12:04:34,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:04:34,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:04:34,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:04:34,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:04:34,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:04:34,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:04:34" (1/1) ... [2020-12-02 12:04:34,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e13cefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:34, skipping insertion in model container [2020-12-02 12:04:34,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:04:34" (1/1) ... [2020-12-02 12:04:34,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:04:34,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:04:35,056 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/safe000_pso.opt.i[949,962] [2020-12-02 12:04:35,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:04:35,303 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:04:35,322 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/safe000_pso.opt.i[949,962] [2020-12-02 12:04:35,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:04:35,492 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:04:35,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35 WrapperNode [2020-12-02 12:04:35,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:04:35,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:04:35,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:04:35,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:04:35,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:04:35,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:04:35,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:04:35,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:04:35,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (1/1) ... [2020-12-02 12:04:35,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:04:35,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:04:35,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:04:35,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:04:35,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (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 12:04:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:04:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:04:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:04:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:04:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:04:35,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:04:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:04:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:04:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:04:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:04:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:04:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:04:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:04:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:04:35,714 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 12:04:36,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:04:36,191 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:04:36,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:04:36 BoogieIcfgContainer [2020-12-02 12:04:36,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:04:36,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:04:36,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:04:36,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:04:36,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:04:34" (1/3) ... [2020-12-02 12:04:36,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67591791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:04:36, skipping insertion in model container [2020-12-02 12:04:36,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:35" (2/3) ... [2020-12-02 12:04:36,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67591791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:04:36, skipping insertion in model container [2020-12-02 12:04:36,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:04:36" (3/3) ... [2020-12-02 12:04:36,205 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-12-02 12:04:36,223 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:04:36,223 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:04:36,228 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:04:36,229 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:04:36,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,277 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,283 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,284 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:36,289 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:04:36,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:04:36,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:04:36,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:04:36,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:04:36,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:04:36,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:04:36,330 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:04:36,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:04:36,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:04:36,344 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:04:36,347 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:04:36,350 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:04:36,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:04:36,415 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:04:36,415 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:04:36,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:04:36,424 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:04:39,537 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:04:39,883 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:04:39,994 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 12:04:40,003 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-02 12:04:40,003 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-02 12:04:40,009 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:04:40,059 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:04:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:04:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:04:40,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:40,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:40,073 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:40,086 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-02 12:04:40,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:40,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326721650] [2020-12-02 12:04:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:40,301 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 12:04:40,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326721650] [2020-12-02 12:04:40,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:40,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:04:40,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130679872] [2020-12-02 12:04:40,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:04:40,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:40,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:04:40,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:04:40,330 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:04:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:40,367 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:04:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:04:40,371 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:04:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:40,399 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:04:40,399 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:04:40,401 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 12:04:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:04:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:04:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:04:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:04:40,502 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:04:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:40,503 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:04:40,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:04:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:04:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:04:40,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:40,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:40,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:04:40,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:40,508 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-02 12:04:40,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:40,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421019432] [2020-12-02 12:04:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:40,800 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 12:04:40,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421019432] [2020-12-02 12:04:40,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:40,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:04:40,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484511133] [2020-12-02 12:04:40,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:04:40,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:04:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:04:40,807 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:04:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:40,921 INFO L93 Difference]: Finished difference Result 545 states and 1490 transitions. [2020-12-02 12:04:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:04:40,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:04:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:40,929 INFO L225 Difference]: With dead ends: 545 [2020-12-02 12:04:40,930 INFO L226 Difference]: Without dead ends: 422 [2020-12-02 12:04:40,930 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 12:04:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-02 12:04:40,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 352. [2020-12-02 12:04:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-12-02 12:04:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 987 transitions. [2020-12-02 12:04:40,982 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 987 transitions. Word has length 9 [2020-12-02 12:04:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:40,983 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 987 transitions. [2020-12-02 12:04:40,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:04:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 987 transitions. [2020-12-02 12:04:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:04:40,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:40,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:40,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:04:40,987 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:40,988 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2020-12-02 12:04:40,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:40,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257252141] [2020-12-02 12:04:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:41,134 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 12:04:41,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257252141] [2020-12-02 12:04:41,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:41,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:41,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900006046] [2020-12-02 12:04:41,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:41,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:41,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:41,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:41,137 INFO L87 Difference]: Start difference. First operand 352 states and 987 transitions. Second operand 5 states. [2020-12-02 12:04:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:41,233 INFO L93 Difference]: Finished difference Result 448 states and 1164 transitions. [2020-12-02 12:04:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:41,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:04:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:41,236 INFO L225 Difference]: With dead ends: 448 [2020-12-02 12:04:41,237 INFO L226 Difference]: Without dead ends: 360 [2020-12-02 12:04:41,237 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 12:04:41,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-12-02 12:04:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 302. [2020-12-02 12:04:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-02 12:04:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 814 transitions. [2020-12-02 12:04:41,251 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 814 transitions. Word has length 10 [2020-12-02 12:04:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:41,251 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 814 transitions. [2020-12-02 12:04:41,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 814 transitions. [2020-12-02 12:04:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:04:41,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:41,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:41,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:04:41,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:41,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1610224715, now seen corresponding path program 1 times [2020-12-02 12:04:41,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:41,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504120588] [2020-12-02 12:04:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:41,333 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 12:04:41,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504120588] [2020-12-02 12:04:41,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:41,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:41,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978537100] [2020-12-02 12:04:41,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:41,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:41,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:41,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:41,336 INFO L87 Difference]: Start difference. First operand 302 states and 814 transitions. Second operand 5 states. [2020-12-02 12:04:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:41,390 INFO L93 Difference]: Finished difference Result 382 states and 984 transitions. [2020-12-02 12:04:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:41,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:04:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:41,393 INFO L225 Difference]: With dead ends: 382 [2020-12-02 12:04:41,394 INFO L226 Difference]: Without dead ends: 338 [2020-12-02 12:04:41,394 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 12:04:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-02 12:04:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 286. [2020-12-02 12:04:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-02 12:04:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 762 transitions. [2020-12-02 12:04:41,407 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 762 transitions. Word has length 11 [2020-12-02 12:04:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:41,408 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 762 transitions. [2020-12-02 12:04:41,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 762 transitions. [2020-12-02 12:04:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:04:41,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:41,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:41,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:04:41,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2020-12-02 12:04:41,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:41,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467988562] [2020-12-02 12:04:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:41,512 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 12:04:41,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467988562] [2020-12-02 12:04:41,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:41,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:41,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263741909] [2020-12-02 12:04:41,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:04:41,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:41,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:04:41,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:04:41,516 INFO L87 Difference]: Start difference. First operand 286 states and 762 transitions. Second operand 4 states. [2020-12-02 12:04:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:41,561 INFO L93 Difference]: Finished difference Result 354 states and 900 transitions. [2020-12-02 12:04:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:04:41,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:04:41,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:41,564 INFO L225 Difference]: With dead ends: 354 [2020-12-02 12:04:41,564 INFO L226 Difference]: Without dead ends: 286 [2020-12-02 12:04:41,564 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 12:04:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-12-02 12:04:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 218. [2020-12-02 12:04:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-02 12:04:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 572 transitions. [2020-12-02 12:04:41,577 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 572 transitions. Word has length 12 [2020-12-02 12:04:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:41,578 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 572 transitions. [2020-12-02 12:04:41,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:04:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 572 transitions. [2020-12-02 12:04:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:04:41,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:41,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:41,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:04:41,579 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1069072958, now seen corresponding path program 1 times [2020-12-02 12:04:41,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:41,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869518612] [2020-12-02 12:04:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:41,723 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 12:04:41,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869518612] [2020-12-02 12:04:41,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:41,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:41,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239195697] [2020-12-02 12:04:41,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:41,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:41,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:41,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:41,728 INFO L87 Difference]: Start difference. First operand 218 states and 572 transitions. Second operand 5 states. [2020-12-02 12:04:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:41,780 INFO L93 Difference]: Finished difference Result 278 states and 700 transitions. [2020-12-02 12:04:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:04:41,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:04:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:41,782 INFO L225 Difference]: With dead ends: 278 [2020-12-02 12:04:41,782 INFO L226 Difference]: Without dead ends: 134 [2020-12-02 12:04:41,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:04:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-02 12:04:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-02 12:04:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-02 12:04:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2020-12-02 12:04:41,791 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 12 [2020-12-02 12:04:41,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:41,791 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2020-12-02 12:04:41,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2020-12-02 12:04:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:04:41,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:41,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:41,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:04:41,793 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:41,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1136607611, now seen corresponding path program 1 times [2020-12-02 12:04:41,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:41,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116688248] [2020-12-02 12:04:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:41,905 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 12:04:41,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116688248] [2020-12-02 12:04:41,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:41,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:04:41,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817522213] [2020-12-02 12:04:41,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:04:41,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:41,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:04:41,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:04:41,909 INFO L87 Difference]: Start difference. First operand 134 states and 312 transitions. Second operand 6 states. [2020-12-02 12:04:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:41,955 INFO L93 Difference]: Finished difference Result 162 states and 372 transitions. [2020-12-02 12:04:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:04:41,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:04:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:41,957 INFO L225 Difference]: With dead ends: 162 [2020-12-02 12:04:41,957 INFO L226 Difference]: Without dead ends: 90 [2020-12-02 12:04:41,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:04:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-02 12:04:41,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-02 12:04:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-02 12:04:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 194 transitions. [2020-12-02 12:04:41,963 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 194 transitions. Word has length 14 [2020-12-02 12:04:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:41,963 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 194 transitions. [2020-12-02 12:04:41,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:04:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 194 transitions. [2020-12-02 12:04:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:04:41,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:41,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:41,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:04:41,965 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 559846421, now seen corresponding path program 1 times [2020-12-02 12:04:41,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:41,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243514255] [2020-12-02 12:04:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:42,039 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 12:04:42,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243514255] [2020-12-02 12:04:42,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:42,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:42,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983434373] [2020-12-02 12:04:42,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:42,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:42,042 INFO L87 Difference]: Start difference. First operand 90 states and 194 transitions. Second operand 5 states. [2020-12-02 12:04:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:42,072 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-12-02 12:04:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:04:42,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:04:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:42,072 INFO L225 Difference]: With dead ends: 82 [2020-12-02 12:04:42,072 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:04:42,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:04:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:04:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:04:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:04:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:04:42,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 12:04:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:42,074 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:04:42,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:04:42,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:04:42,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:04:42,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:04:42 BasicIcfg [2020-12-02 12:04:42,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:04:42,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:04:42,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:04:42,079 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:04:42,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:04:36" (3/4) ... [2020-12-02 12:04:42,084 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:04:42,091 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:04:42,091 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:04:42,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:04:42,098 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:04:42,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:04:42,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:04:42,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:04:42,163 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:04:42,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:04:42,165 INFO L168 Benchmark]: Toolchain (without parser) took 7450.29 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 32.2 MB in the beginning and 48.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:42,166 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 20.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:04:42,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.42 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 26.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:42,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.84 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 39.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:42,169 INFO L168 Benchmark]: Boogie Preprocessor took 64.02 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:04:42,171 INFO L168 Benchmark]: RCFGBuilder took 578.15 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.6 MB in the beginning and 41.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:42,172 INFO L168 Benchmark]: TraceAbstraction took 5882.02 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 41.5 MB in the beginning and 51.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:42,173 INFO L168 Benchmark]: Witness Printer took 85.14 ms. Allocated memory is still 121.6 MB. Free memory was 51.1 MB in the beginning and 48.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:42,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 20.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 773.42 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 26.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.84 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 39.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.02 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 578.15 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.6 MB in the beginning and 41.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5882.02 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 41.5 MB in the beginning and 51.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * Witness Printer took 85.14 ms. Allocated memory is still 121.6 MB. Free memory was 51.1 MB in the beginning and 48.0 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 743 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 191 SDtfs, 188 SDslu, 268 SDs, 0 SdLazy, 119 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 248 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 4857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...