./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe002_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/safe002_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 9839125b5a4d74faffc5f8180766feb54b289091 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:05:16,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:05:16,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:05:16,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:05:16,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:05:16,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:05:16,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:05:16,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:05:16,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:05:16,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:05:16,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:05:16,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:05:16,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:05:16,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:05:16,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:05:16,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:05:16,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:05:16,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:05:16,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:05:16,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:05:16,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:05:16,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:05:16,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:05:16,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:05:16,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:05:16,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:05:16,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:05:16,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:05:16,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:05:16,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:05:16,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:05:16,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:05:16,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:05:16,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:05:16,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:05:16,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:05:16,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:05:16,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:05:16,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:05:16,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:05:16,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:05:16,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:05:16,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:05:16,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:05:16,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:05:16,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:05:16,234 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:05:16,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:05:16,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:05:16,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:05:16,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:05:16,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:05:16,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:05:16,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:05:16,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:05:16,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:05:16,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:05:16,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:05:16,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:05:16,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:05:16,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:05:16,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:05:16,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:05:16,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:05:16,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:05:16,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:05:16,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:05:16,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:05:16,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:05:16,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:05:16,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:05:16,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9839125b5a4d74faffc5f8180766feb54b289091 [2020-12-02 12:05:16,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:05:16,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:05:16,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:05:16,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:05:16,709 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:05:16,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i [2020-12-02 12:05:16,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99c0b96c/6949a1c4a51a492fab992bf304f7b6a3/FLAG1fc1626ca [2020-12-02 12:05:17,408 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:05:17,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i [2020-12-02 12:05:17,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99c0b96c/6949a1c4a51a492fab992bf304f7b6a3/FLAG1fc1626ca [2020-12-02 12:05:17,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99c0b96c/6949a1c4a51a492fab992bf304f7b6a3 [2020-12-02 12:05:17,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:05:17,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:05:17,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:05:17,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:05:17,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:05:17,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:05:17" (1/1) ... [2020-12-02 12:05:17,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f21309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:17, skipping insertion in model container [2020-12-02 12:05:17,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:05:17" (1/1) ... [2020-12-02 12:05:17,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:05:17,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:05:17,934 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/safe002_tso.opt.i[949,962] [2020-12-02 12:05:18,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:05:18,166 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:05:18,186 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/safe002_tso.opt.i[949,962] [2020-12-02 12:05:18,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:05:18,377 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:05:18,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18 WrapperNode [2020-12-02 12:05:18,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:05:18,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:05:18,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:05:18,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:05:18,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:05:18,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:05:18,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:05:18,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:05:18,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (1/1) ... [2020-12-02 12:05:18,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:05:18,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:05:18,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:05:18,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:05:18,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (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 12:05:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:05:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:05:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:05:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:05:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:05:18,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:05:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:05:18,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:05:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:05:18,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:05:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:05:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:05:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:05:18,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:05:18,622 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 12:05:19,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:05:19,006 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:05:19,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:05:19 BoogieIcfgContainer [2020-12-02 12:05:19,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:05:19,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:05:19,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:05:19,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:05:19,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:05:17" (1/3) ... [2020-12-02 12:05:19,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f14168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:05:19, skipping insertion in model container [2020-12-02 12:05:19,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:05:18" (2/3) ... [2020-12-02 12:05:19,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f14168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:05:19, skipping insertion in model container [2020-12-02 12:05:19,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:05:19" (3/3) ... [2020-12-02 12:05:19,019 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-12-02 12:05:19,035 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:05:19,035 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:05:19,039 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:05:19,040 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:05:19,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,075 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,075 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,077 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,077 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,078 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,078 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,078 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,078 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,081 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,081 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,098 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,098 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:05:19,103 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:05:19,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:05:19,142 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:05:19,142 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:05:19,142 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:05:19,143 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:05:19,143 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:05:19,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:05:19,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:05:19,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:05:19,156 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:05:19,159 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:05:19,162 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:05:19,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:05:19,216 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:05:19,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:05:19,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:05:19,224 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:05:21,713 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:05:21,991 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:05:22,072 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-02 12:05:22,072 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-02 12:05:22,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:05:22,110 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:05:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:05:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:05:22,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:22,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:22,121 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-02 12:05:22,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:22,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932637217] [2020-12-02 12:05:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:22,317 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 12:05:22,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932637217] [2020-12-02 12:05:22,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:22,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:05:22,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051242374] [2020-12-02 12:05:22,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:05:22,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:05:22,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:05:22,357 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:05:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:22,409 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:05:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:05:22,410 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:05:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:22,426 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:05:22,426 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:05:22,427 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 12:05:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:05:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:05:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:05:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:05:22,512 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:05:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:22,513 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:05:22,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:05:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:05:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:05:22,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:22,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:22,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:05:22,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-02 12:05:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:22,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373038805] [2020-12-02 12:05:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:22,702 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 12:05:22,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373038805] [2020-12-02 12:05:22,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:22,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:05:22,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632042652] [2020-12-02 12:05:22,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:05:22,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:22,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:05:22,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:05:22,709 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:05:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:22,755 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-02 12:05:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:05:22,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:05:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:22,763 INFO L225 Difference]: With dead ends: 330 [2020-12-02 12:05:22,763 INFO L226 Difference]: Without dead ends: 266 [2020-12-02 12:05:22,764 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 12:05:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-02 12:05:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-02 12:05:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-02 12:05:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-02 12:05:22,818 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-02 12:05:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:22,818 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-02 12:05:22,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:05:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-02 12:05:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:05:22,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:22,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:22,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:05:22,823 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2020-12-02 12:05:22,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:22,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646019977] [2020-12-02 12:05:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:22,973 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 12:05:22,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646019977] [2020-12-02 12:05:22,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:22,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:05:22,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649936009] [2020-12-02 12:05:22,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:05:22,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:22,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:05:22,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:05:22,977 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-02 12:05:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,055 INFO L93 Difference]: Finished difference Result 414 states and 1086 transitions. [2020-12-02 12:05:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:05:23,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:05:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,059 INFO L225 Difference]: With dead ends: 414 [2020-12-02 12:05:23,059 INFO L226 Difference]: Without dead ends: 330 [2020-12-02 12:05:23,060 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 12:05:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-12-02 12:05:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 286. [2020-12-02 12:05:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-02 12:05:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 766 transitions. [2020-12-02 12:05:23,079 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 766 transitions. Word has length 10 [2020-12-02 12:05:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,080 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 766 transitions. [2020-12-02 12:05:23,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:05:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 766 transitions. [2020-12-02 12:05:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:05:23,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:05:23,084 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -259726332, now seen corresponding path program 1 times [2020-12-02 12:05:23,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919407121] [2020-12-02 12:05:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,166 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 12:05:23,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919407121] [2020-12-02 12:05:23,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:05:23,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910161835] [2020-12-02 12:05:23,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:05:23,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:05:23,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:05:23,170 INFO L87 Difference]: Start difference. First operand 286 states and 766 transitions. Second operand 5 states. [2020-12-02 12:05:23,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,212 INFO L93 Difference]: Finished difference Result 410 states and 1076 transitions. [2020-12-02 12:05:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:05:23,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:05:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,215 INFO L225 Difference]: With dead ends: 410 [2020-12-02 12:05:23,215 INFO L226 Difference]: Without dead ends: 220 [2020-12-02 12:05:23,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:05:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-02 12:05:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-12-02 12:05:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-02 12:05:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 576 transitions. [2020-12-02 12:05:23,225 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 576 transitions. Word has length 12 [2020-12-02 12:05:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,226 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 576 transitions. [2020-12-02 12:05:23,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:05:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 576 transitions. [2020-12-02 12:05:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:05:23,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:05:23,228 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2020-12-02 12:05:23,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869746085] [2020-12-02 12:05:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,314 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 12:05:23,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869746085] [2020-12-02 12:05:23,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:05:23,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050403396] [2020-12-02 12:05:23,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:05:23,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:05:23,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:05:23,318 INFO L87 Difference]: Start difference. First operand 220 states and 576 transitions. Second operand 5 states. [2020-12-02 12:05:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,373 INFO L93 Difference]: Finished difference Result 288 states and 714 transitions. [2020-12-02 12:05:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:05:23,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:05:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,376 INFO L225 Difference]: With dead ends: 288 [2020-12-02 12:05:23,376 INFO L226 Difference]: Without dead ends: 212 [2020-12-02 12:05:23,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:05:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-02 12:05:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 176. [2020-12-02 12:05:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-02 12:05:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 440 transitions. [2020-12-02 12:05:23,384 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 440 transitions. Word has length 12 [2020-12-02 12:05:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,385 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 440 transitions. [2020-12-02 12:05:23,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:05:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 440 transitions. [2020-12-02 12:05:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:05:23,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:05:23,387 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1622661680, now seen corresponding path program 2 times [2020-12-02 12:05:23,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546743792] [2020-12-02 12:05:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:05:23,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546743792] [2020-12-02 12:05:23,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:05:23,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470575665] [2020-12-02 12:05:23,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:05:23,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:05:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:05:23,471 INFO L87 Difference]: Start difference. First operand 176 states and 440 transitions. Second operand 5 states. [2020-12-02 12:05:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,507 INFO L93 Difference]: Finished difference Result 224 states and 550 transitions. [2020-12-02 12:05:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:05:23,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:05:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,509 INFO L225 Difference]: With dead ends: 224 [2020-12-02 12:05:23,509 INFO L226 Difference]: Without dead ends: 116 [2020-12-02 12:05:23,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:05:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-02 12:05:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-02 12:05:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-02 12:05:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-12-02 12:05:23,515 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 12 [2020-12-02 12:05:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,515 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-12-02 12:05:23,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:05:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-12-02 12:05:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:05:23,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:05:23,517 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash -701864959, now seen corresponding path program 1 times [2020-12-02 12:05:23,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025892743] [2020-12-02 12:05:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,586 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 12:05:23,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025892743] [2020-12-02 12:05:23,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:05:23,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454368983] [2020-12-02 12:05:23,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:05:23,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:05:23,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:05:23,589 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 6 states. [2020-12-02 12:05:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,629 INFO L93 Difference]: Finished difference Result 152 states and 362 transitions. [2020-12-02 12:05:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:05:23,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:05:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,631 INFO L225 Difference]: With dead ends: 152 [2020-12-02 12:05:23,631 INFO L226 Difference]: Without dead ends: 80 [2020-12-02 12:05:23,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 12:05:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-02 12:05:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-02 12:05:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-02 12:05:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-12-02 12:05:23,636 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 14 [2020-12-02 12:05:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,636 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-12-02 12:05:23,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:05:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-12-02 12:05:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:05:23,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:05:23,638 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 2 times [2020-12-02 12:05:23,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40552285] [2020-12-02 12:05:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,687 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 12:05:23,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40552285] [2020-12-02 12:05:23,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:05:23,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211986797] [2020-12-02 12:05:23,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:05:23,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:05:23,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:05:23,690 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-12-02 12:05:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,714 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-12-02 12:05:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:05:23,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:05:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,716 INFO L225 Difference]: With dead ends: 91 [2020-12-02 12:05:23,716 INFO L226 Difference]: Without dead ends: 69 [2020-12-02 12:05:23,716 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 12:05:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-02 12:05:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-02 12:05:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-02 12:05:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-12-02 12:05:23,719 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-12-02 12:05:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,720 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-12-02 12:05:23,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:05:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-12-02 12:05:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:05:23,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:05:23,721 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2020-12-02 12:05:23,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301123865] [2020-12-02 12:05:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,784 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 12:05:23,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301123865] [2020-12-02 12:05:23,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:05:23,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955047776] [2020-12-02 12:05:23,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:05:23,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:05:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:05:23,793 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-12-02 12:05:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,832 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-12-02 12:05:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:05:23,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:05:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,834 INFO L225 Difference]: With dead ends: 65 [2020-12-02 12:05:23,834 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 12:05:23,834 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 12:05:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 12:05:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-02 12:05:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-02 12:05:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-12-02 12:05:23,837 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-12-02 12:05:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,838 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-12-02 12:05:23,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:05:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-12-02 12:05:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:05:23,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:05:23,839 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2020-12-02 12:05:23,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816748322] [2020-12-02 12:05:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:23,898 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 12:05:23,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816748322] [2020-12-02 12:05:23,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:23,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:05:23,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804134937] [2020-12-02 12:05:23,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:05:23,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:23,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:05:23,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:05:23,901 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-12-02 12:05:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:23,940 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-12-02 12:05:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:05:23,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:05:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:23,942 INFO L225 Difference]: With dead ends: 43 [2020-12-02 12:05:23,942 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 12:05:23,942 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 12:05:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 12:05:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 12:05:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 12:05:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-02 12:05:23,944 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-12-02 12:05:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:23,945 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-02 12:05:23,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:05:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-02 12:05:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:05:23,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:05:23,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:05:23,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:05:23,946 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:05:23,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:05:23,947 INFO L82 PathProgramCache]: Analyzing trace with hash 719368643, now seen corresponding path program 1 times [2020-12-02 12:05:23,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:05:23,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213595758] [2020-12-02 12:05:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:05:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:05:24,003 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 12:05:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213595758] [2020-12-02 12:05:24,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:05:24,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:05:24,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498563395] [2020-12-02 12:05:24,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:05:24,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:05:24,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:05:24,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:05:24,006 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-02 12:05:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:05:24,028 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-02 12:05:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:05:24,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:05:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:05:24,029 INFO L225 Difference]: With dead ends: 36 [2020-12-02 12:05:24,029 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:05:24,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:05:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:05:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:05:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:05:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:05:24,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:05:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:05:24,031 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:05:24,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:05:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:05:24,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:05:24,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:05:24,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:05:24 BasicIcfg [2020-12-02 12:05:24,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:05:24,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:05:24,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:05:24,037 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:05:24,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:05:19" (3/4) ... [2020-12-02 12:05:24,041 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:05:24,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:05:24,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:05:24,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:05:24,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:05:24,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:05:24,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:05:24,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:05:24,112 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:05:24,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:05:24,117 INFO L168 Benchmark]: Toolchain (without parser) took 6417.51 ms. Allocated memory was 44.0 MB in the beginning and 121.6 MB in the end (delta: 77.6 MB). Free memory was 21.9 MB in the beginning and 67.8 MB in the end (delta: -45.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:05:24,119 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:05:24,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.60 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 21.7 MB in the beginning and 33.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:05:24,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.46 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 38.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:05:24,122 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 36.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:05:24,123 INFO L168 Benchmark]: RCFGBuilder took 490.38 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 28.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:05:24,125 INFO L168 Benchmark]: TraceAbstraction took 5024.08 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 28.1 MB in the beginning and 70.9 MB in the end (delta: -42.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:05:24,125 INFO L168 Benchmark]: Witness Printer took 79.31 ms. Allocated memory is still 121.6 MB. Free memory was 70.9 MB in the beginning and 67.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:05:24,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 677.60 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 21.7 MB in the beginning and 33.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.46 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 38.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 36.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 490.38 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 28.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5024.08 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 28.1 MB in the beginning and 70.9 MB in the end (delta: -42.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * Witness Printer took 79.31 ms. Allocated memory is still 121.6 MB. Free memory was 70.9 MB in the beginning and 67.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 722 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 243 SDtfs, 230 SDslu, 383 SDs, 0 SdLazy, 192 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 80 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 6931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...