./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe001_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/safe001_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 37f367aa306d4413b86571ec4edcd77d82ad4344 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:04:45,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:04:45,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:04:46,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:04:46,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:04:46,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:04:46,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:04:46,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:04:46,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:04:46,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:04:46,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:04:46,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:04:46,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:04:46,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:04:46,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:04:46,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:04:46,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:04:46,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:04:46,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:04:46,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:04:46,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:04:46,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:04:46,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:04:46,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:04:46,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:04:46,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:04:46,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:04:46,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:04:46,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:04:46,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:04:46,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:04:46,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:04:46,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:04:46,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:04:46,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:04:46,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:04:46,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:04:46,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:04:46,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:04:46,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:04:46,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:04:46,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:04:46,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:04:46,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:04:46,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:04:46,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:04:46,150 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:04:46,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:04:46,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:04:46,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:04:46,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:04:46,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:04:46,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:04:46,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:04:46,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:04:46,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:04:46,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:04:46,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:04:46,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:04:46,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:04:46,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:04:46,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:04:46,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:04:46,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:04:46,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:04:46,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:04:46,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:04:46,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:04:46,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:04:46,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:04:46,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:04:46,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f367aa306d4413b86571ec4edcd77d82ad4344 [2020-12-02 12:04:46,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:04:46,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:04:46,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:04:46,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:04:46,616 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:04:46,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i [2020-12-02 12:04:46,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75c3c616d/299bc985b7d441afbf9a6459e43096d1/FLAGbe8224ae8 [2020-12-02 12:04:47,550 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:04:47,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.opt.i [2020-12-02 12:04:47,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75c3c616d/299bc985b7d441afbf9a6459e43096d1/FLAGbe8224ae8 [2020-12-02 12:04:47,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75c3c616d/299bc985b7d441afbf9a6459e43096d1 [2020-12-02 12:04:47,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:04:47,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:04:47,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:04:47,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:04:47,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:04:47,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:04:47" (1/1) ... [2020-12-02 12:04:47,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb65e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:47, skipping insertion in model container [2020-12-02 12:04:47,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:04:47" (1/1) ... [2020-12-02 12:04:47,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:04:47,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:04:48,160 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/safe001_tso.opt.i[949,962] [2020-12-02 12:04:48,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:04:48,398 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:04:48,410 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/safe001_tso.opt.i[949,962] [2020-12-02 12:04:48,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:04:48,532 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:04:48,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48 WrapperNode [2020-12-02 12:04:48,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:04:48,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:04:48,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:04:48,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:04:48,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:04:48,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:04:48,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:04:48,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:04:48,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (1/1) ... [2020-12-02 12:04:48,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:04:48,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:04:48,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:04:48,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:04:48,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (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 12:04:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:04:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:04:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:04:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:04:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:04:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:04:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:04:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:04:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:04:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:04:48,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:04:48,753 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 12:04:49,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:04:49,229 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:04:49,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:04:49 BoogieIcfgContainer [2020-12-02 12:04:49,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:04:49,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:04:49,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:04:49,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:04:49,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:04:47" (1/3) ... [2020-12-02 12:04:49,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a98729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:04:49, skipping insertion in model container [2020-12-02 12:04:49,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:04:48" (2/3) ... [2020-12-02 12:04:49,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a98729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:04:49, skipping insertion in model container [2020-12-02 12:04:49,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:04:49" (3/3) ... [2020-12-02 12:04:49,242 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-12-02 12:04:49,259 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:04:49,259 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:04:49,264 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:04:49,265 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:04:49,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,307 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,307 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,311 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,311 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,317 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,317 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,320 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:04:49,323 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:04:49,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:04:49,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:04:49,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:04:49,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:04:49,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:04:49,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:04:49,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:04:49,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:04:49,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:04:49,377 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:04:49,380 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:04:49,383 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:04:49,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-02 12:04:49,446 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-02 12:04:49,447 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:04:49,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:04:49,454 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:04:52,186 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:04:52,511 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:04:52,618 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-02 12:04:52,636 INFO L131 LiptonReduction]: Checked pairs total: 2466 [2020-12-02 12:04:52,636 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-02 12:04:52,642 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:04:52,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:04:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:04:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:04:52,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:52,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:52,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:52,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:52,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1644080523, now seen corresponding path program 1 times [2020-12-02 12:04:52,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:52,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611711009] [2020-12-02 12:04:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:52,934 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 12:04:52,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611711009] [2020-12-02 12:04:52,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:52,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:04:52,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204926647] [2020-12-02 12:04:52,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:04:52,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:52,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:04:52,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:04:52,960 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:04:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:52,996 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:04:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:04:52,998 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:04:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:53,017 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:04:53,017 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:04:53,018 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 12:04:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:04:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:04:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:04:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:04:53,117 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:04:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:53,118 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:04:53,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:04:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:04:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:04:53,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:53,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:53,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:04:53,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:53,121 INFO L82 PathProgramCache]: Analyzing trace with hash 573104580, now seen corresponding path program 1 times [2020-12-02 12:04:53,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:53,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21343074] [2020-12-02 12:04:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:53,287 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 12:04:53,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21343074] [2020-12-02 12:04:53,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:53,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:04:53,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564680463] [2020-12-02 12:04:53,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:04:53,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:53,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:04:53,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:04:53,294 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:04:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:53,380 INFO L93 Difference]: Finished difference Result 541 states and 1484 transitions. [2020-12-02 12:04:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:04:53,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:04:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:53,391 INFO L225 Difference]: With dead ends: 541 [2020-12-02 12:04:53,391 INFO L226 Difference]: Without dead ends: 410 [2020-12-02 12:04:53,392 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 12:04:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-12-02 12:04:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 340. [2020-12-02 12:04:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-12-02 12:04:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 937 transitions. [2020-12-02 12:04:53,460 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 937 transitions. Word has length 9 [2020-12-02 12:04:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:53,461 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 937 transitions. [2020-12-02 12:04:53,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:04:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 937 transitions. [2020-12-02 12:04:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:04:53,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:53,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:53,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:04:53,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:53,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1603605898, now seen corresponding path program 1 times [2020-12-02 12:04:53,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:53,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87398974] [2020-12-02 12:04:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:53,586 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 12:04:53,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87398974] [2020-12-02 12:04:53,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:53,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:53,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27169780] [2020-12-02 12:04:53,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:53,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:53,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:53,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:53,593 INFO L87 Difference]: Start difference. First operand 340 states and 937 transitions. Second operand 5 states. [2020-12-02 12:04:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:53,663 INFO L93 Difference]: Finished difference Result 455 states and 1174 transitions. [2020-12-02 12:04:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:53,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:04:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:53,667 INFO L225 Difference]: With dead ends: 455 [2020-12-02 12:04:53,668 INFO L226 Difference]: Without dead ends: 366 [2020-12-02 12:04:53,668 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 12:04:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-12-02 12:04:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 294. [2020-12-02 12:04:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-12-02 12:04:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 797 transitions. [2020-12-02 12:04:53,682 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 797 transitions. Word has length 10 [2020-12-02 12:04:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:53,683 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 797 transitions. [2020-12-02 12:04:53,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 797 transitions. [2020-12-02 12:04:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:04:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:53,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:53,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:04:53,686 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:53,687 INFO L82 PathProgramCache]: Analyzing trace with hash 996933044, now seen corresponding path program 1 times [2020-12-02 12:04:53,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:53,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804980364] [2020-12-02 12:04:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:53,786 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 12:04:53,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804980364] [2020-12-02 12:04:53,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:53,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:53,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760623570] [2020-12-02 12:04:53,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:53,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:53,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:53,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:53,789 INFO L87 Difference]: Start difference. First operand 294 states and 797 transitions. Second operand 5 states. [2020-12-02 12:04:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:53,857 INFO L93 Difference]: Finished difference Result 410 states and 1048 transitions. [2020-12-02 12:04:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:53,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:04:53,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:53,862 INFO L225 Difference]: With dead ends: 410 [2020-12-02 12:04:53,862 INFO L226 Difference]: Without dead ends: 344 [2020-12-02 12:04:53,862 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 12:04:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-12-02 12:04:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 278. [2020-12-02 12:04:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-02 12:04:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2020-12-02 12:04:53,875 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 11 [2020-12-02 12:04:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:53,876 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2020-12-02 12:04:53,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2020-12-02 12:04:53,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:04:53,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:53,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:53,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:04:53,878 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash 996952264, now seen corresponding path program 1 times [2020-12-02 12:04:53,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:53,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022931819] [2020-12-02 12:04:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:53,977 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 12:04:53,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022931819] [2020-12-02 12:04:53,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:53,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:53,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039858120] [2020-12-02 12:04:53,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:53,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:53,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:53,984 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand 5 states. [2020-12-02 12:04:54,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,044 INFO L93 Difference]: Finished difference Result 372 states and 946 transitions. [2020-12-02 12:04:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:54,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:04:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,047 INFO L225 Difference]: With dead ends: 372 [2020-12-02 12:04:54,047 INFO L226 Difference]: Without dead ends: 318 [2020-12-02 12:04:54,048 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 12:04:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-12-02 12:04:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 250. [2020-12-02 12:04:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-02 12:04:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 657 transitions. [2020-12-02 12:04:54,059 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 657 transitions. Word has length 11 [2020-12-02 12:04:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,060 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 657 transitions. [2020-12-02 12:04:54,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 657 transitions. [2020-12-02 12:04:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:04:54,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:04:54,062 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,063 INFO L82 PathProgramCache]: Analyzing trace with hash -828726514, now seen corresponding path program 1 times [2020-12-02 12:04:54,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105921147] [2020-12-02 12:04:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:54,162 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 12:04:54,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105921147] [2020-12-02 12:04:54,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:54,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:54,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370101434] [2020-12-02 12:04:54,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:54,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:54,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:54,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:54,166 INFO L87 Difference]: Start difference. First operand 250 states and 657 transitions. Second operand 5 states. [2020-12-02 12:04:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,239 INFO L93 Difference]: Finished difference Result 335 states and 834 transitions. [2020-12-02 12:04:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:54,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:04:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,243 INFO L225 Difference]: With dead ends: 335 [2020-12-02 12:04:54,243 INFO L226 Difference]: Without dead ends: 292 [2020-12-02 12:04:54,244 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 12:04:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-02 12:04:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-12-02 12:04:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-02 12:04:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 616 transitions. [2020-12-02 12:04:54,255 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 616 transitions. Word has length 12 [2020-12-02 12:04:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,257 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 616 transitions. [2020-12-02 12:04:54,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 616 transitions. [2020-12-02 12:04:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:04:54,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:04:54,259 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash 796278870, now seen corresponding path program 1 times [2020-12-02 12:04:54,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297560708] [2020-12-02 12:04:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:04:54,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297560708] [2020-12-02 12:04:54,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:54,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:04:54,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33280494] [2020-12-02 12:04:54,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:54,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:54,363 INFO L87 Difference]: Start difference. First operand 238 states and 616 transitions. Second operand 5 states. [2020-12-02 12:04:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,418 INFO L93 Difference]: Finished difference Result 392 states and 969 transitions. [2020-12-02 12:04:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:54,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:04:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,422 INFO L225 Difference]: With dead ends: 392 [2020-12-02 12:04:54,422 INFO L226 Difference]: Without dead ends: 304 [2020-12-02 12:04:54,423 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 12:04:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-02 12:04:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 222. [2020-12-02 12:04:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-02 12:04:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 550 transitions. [2020-12-02 12:04:54,433 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 550 transitions. Word has length 13 [2020-12-02 12:04:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,433 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 550 transitions. [2020-12-02 12:04:54,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 550 transitions. [2020-12-02 12:04:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:04:54,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:04:54,439 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,440 INFO L82 PathProgramCache]: Analyzing trace with hash 78666770, now seen corresponding path program 1 times [2020-12-02 12:04:54,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014311740] [2020-12-02 12:04:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:54,551 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 12:04:54,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014311740] [2020-12-02 12:04:54,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:54,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:04:54,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999093782] [2020-12-02 12:04:54,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:04:54,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:54,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:04:54,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:04:54,563 INFO L87 Difference]: Start difference. First operand 222 states and 550 transitions. Second operand 6 states. [2020-12-02 12:04:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,611 INFO L93 Difference]: Finished difference Result 316 states and 747 transitions. [2020-12-02 12:04:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:04:54,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-02 12:04:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,613 INFO L225 Difference]: With dead ends: 316 [2020-12-02 12:04:54,613 INFO L226 Difference]: Without dead ends: 172 [2020-12-02 12:04:54,614 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 12:04:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-02 12:04:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2020-12-02 12:04:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-02 12:04:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 328 transitions. [2020-12-02 12:04:54,620 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 328 transitions. Word has length 13 [2020-12-02 12:04:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,621 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 328 transitions. [2020-12-02 12:04:54,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:04:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 328 transitions. [2020-12-02 12:04:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:04:54,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:04:54,622 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,623 INFO L82 PathProgramCache]: Analyzing trace with hash 274334134, now seen corresponding path program 2 times [2020-12-02 12:04:54,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936988311] [2020-12-02 12:04:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:54,734 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 12:04:54,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936988311] [2020-12-02 12:04:54,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:54,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:04:54,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664992115] [2020-12-02 12:04:54,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:04:54,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:54,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:04:54,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:04:54,739 INFO L87 Difference]: Start difference. First operand 140 states and 328 transitions. Second operand 6 states. [2020-12-02 12:04:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,784 INFO L93 Difference]: Finished difference Result 192 states and 432 transitions. [2020-12-02 12:04:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:04:54,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-02 12:04:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,787 INFO L225 Difference]: With dead ends: 192 [2020-12-02 12:04:54,787 INFO L226 Difference]: Without dead ends: 108 [2020-12-02 12:04:54,787 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 12:04:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-02 12:04:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-12-02 12:04:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-02 12:04:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 204 transitions. [2020-12-02 12:04:54,792 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 204 transitions. Word has length 13 [2020-12-02 12:04:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,793 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 204 transitions. [2020-12-02 12:04:54,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:04:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 204 transitions. [2020-12-02 12:04:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:04:54,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:04:54,794 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash 383190448, now seen corresponding path program 1 times [2020-12-02 12:04:54,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600011276] [2020-12-02 12:04:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:54,843 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 12:04:54,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600011276] [2020-12-02 12:04:54,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:54,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:04:54,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899177243] [2020-12-02 12:04:54,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:54,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:54,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:54,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:54,846 INFO L87 Difference]: Start difference. First operand 92 states and 204 transitions. Second operand 5 states. [2020-12-02 12:04:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,898 INFO L93 Difference]: Finished difference Result 106 states and 217 transitions. [2020-12-02 12:04:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:04:54,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:04:54,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,900 INFO L225 Difference]: With dead ends: 106 [2020-12-02 12:04:54,900 INFO L226 Difference]: Without dead ends: 80 [2020-12-02 12:04:54,901 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 12:04:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-02 12:04:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-12-02 12:04:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-02 12:04:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 162 transitions. [2020-12-02 12:04:54,904 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 162 transitions. Word has length 13 [2020-12-02 12:04:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,905 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 162 transitions. [2020-12-02 12:04:54,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 162 transitions. [2020-12-02 12:04:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:04:54,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:04:54,906 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1006670732, now seen corresponding path program 1 times [2020-12-02 12:04:54,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038845854] [2020-12-02 12:04:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:54,956 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 12:04:54,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038845854] [2020-12-02 12:04:54,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:54,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:04:54,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681026928] [2020-12-02 12:04:54,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:04:54,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:54,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:04:54,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:04:54,961 INFO L87 Difference]: Start difference. First operand 76 states and 162 transitions. Second operand 4 states. [2020-12-02 12:04:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:54,987 INFO L93 Difference]: Finished difference Result 80 states and 155 transitions. [2020-12-02 12:04:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:04:54,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:04:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:54,988 INFO L225 Difference]: With dead ends: 80 [2020-12-02 12:04:54,988 INFO L226 Difference]: Without dead ends: 62 [2020-12-02 12:04:54,989 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 12:04:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-02 12:04:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-02 12:04:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-02 12:04:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 117 transitions. [2020-12-02 12:04:54,993 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 117 transitions. Word has length 14 [2020-12-02 12:04:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:54,994 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 117 transitions. [2020-12-02 12:04:54,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:04:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 117 transitions. [2020-12-02 12:04:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:04:54,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:54,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:54,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:04:54,995 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 48994457, now seen corresponding path program 1 times [2020-12-02 12:04:54,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:54,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757409146] [2020-12-02 12:04:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:55,053 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 12:04:55,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757409146] [2020-12-02 12:04:55,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:55,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:04:55,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376769582] [2020-12-02 12:04:55,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:04:55,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:55,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:04:55,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:04:55,057 INFO L87 Difference]: Start difference. First operand 62 states and 117 transitions. Second operand 5 states. [2020-12-02 12:04:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:55,098 INFO L93 Difference]: Finished difference Result 52 states and 90 transitions. [2020-12-02 12:04:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:04:55,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:04:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:55,101 INFO L225 Difference]: With dead ends: 52 [2020-12-02 12:04:55,102 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 12:04:55,102 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 12:04:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 12:04:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 12:04:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 12:04:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-12-02 12:04:55,104 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 15 [2020-12-02 12:04:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:55,105 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-12-02 12:04:55,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:04:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-12-02 12:04:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:04:55,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:04:55,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:04:55,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-02 12:04:55,106 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:04:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:04:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1602840682, now seen corresponding path program 1 times [2020-12-02 12:04:55,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:04:55,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818747786] [2020-12-02 12:04:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:04:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:04:55,196 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 12:04:55,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818747786] [2020-12-02 12:04:55,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:04:55,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:04:55,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639175311] [2020-12-02 12:04:55,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:04:55,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:04:55,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:04:55,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:04:55,204 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-12-02 12:04:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:04:55,226 INFO L93 Difference]: Finished difference Result 36 states and 61 transitions. [2020-12-02 12:04:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:04:55,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:04:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:04:55,226 INFO L225 Difference]: With dead ends: 36 [2020-12-02 12:04:55,226 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:04:55,227 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 12:04:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:04:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:04:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:04:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:04:55,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:04:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:04:55,228 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:04:55,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:04:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:04:55,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:04:55,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-02 12:04:55,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:04:55 BasicIcfg [2020-12-02 12:04:55,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:04:55,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:04:55,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:04:55,235 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:04:55,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:04:49" (3/4) ... [2020-12-02 12:04:55,241 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:04:55,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:04:55,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:04:55,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:04:55,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:04:55,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:04:55,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:04:55,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:04:55,306 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:04:55,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:04:55,308 INFO L168 Benchmark]: Toolchain (without parser) took 7578.12 ms. Allocated memory was 46.1 MB in the beginning and 123.7 MB in the end (delta: 77.6 MB). Free memory was 20.8 MB in the beginning and 89.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:55,309 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 46.1 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:04:55,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.19 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 25.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:55,312 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.47 ms. Allocated memory is still 56.6 MB. Free memory was 25.4 MB in the beginning and 23.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:55,315 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 ms. Allocated memory is still 56.6 MB. Free memory was 23.6 MB in the beginning and 22.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:04:55,316 INFO L168 Benchmark]: RCFGBuilder took 615.79 ms. Allocated memory is still 56.6 MB. Free memory was 22.1 MB in the beginning and 33.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:55,316 INFO L168 Benchmark]: TraceAbstraction took 6000.01 ms. Allocated memory was 56.6 MB in the beginning and 123.7 MB in the end (delta: 67.1 MB). Free memory was 33.0 MB in the beginning and 92.9 MB in the end (delta: -59.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:55,317 INFO L168 Benchmark]: Witness Printer took 72.20 ms. Allocated memory is still 123.7 MB. Free memory was 92.9 MB in the beginning and 89.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:04:55,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 46.1 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 794.19 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 25.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.47 ms. Allocated memory is still 56.6 MB. Free memory was 25.4 MB in the beginning and 23.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.78 ms. Allocated memory is still 56.6 MB. Free memory was 23.6 MB in the beginning and 22.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 615.79 ms. Allocated memory is still 56.6 MB. Free memory was 22.1 MB in the beginning and 33.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6000.01 ms. Allocated memory was 56.6 MB in the beginning and 123.7 MB in the end (delta: 67.1 MB). Free memory was 33.0 MB in the beginning and 92.9 MB in the end (delta: -59.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 72.20 ms. Allocated memory is still 123.7 MB. Free memory was 92.9 MB in the beginning and 89.8 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 781 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2466 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 310 SDtfs, 321 SDslu, 515 SDs, 0 SdLazy, 220 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 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, 13 MinimizatonAttempts, 464 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...