./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23d1eccce81af49a59b7ef89939bb8dc0775df56 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:13:36,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:13:36,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:13:36,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:13:36,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:13:36,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:13:36,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:13:36,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:13:36,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:13:36,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:13:36,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:13:36,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:13:36,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:13:36,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:13:36,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:13:36,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:13:36,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:13:36,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:13:36,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:13:36,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:13:36,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:13:36,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:13:36,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:13:36,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:13:36,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:13:36,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:13:36,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:13:36,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:13:36,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:13:36,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:13:36,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:13:36,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:13:36,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:13:36,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:13:36,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:13:36,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:13:36,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:13:36,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:13:36,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:13:36,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:13:36,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:13:36,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:13:36,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:13:36,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:13:36,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:13:36,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:13:36,408 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:13:36,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:13:36,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:13:36,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:13:36,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:13:36,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:13:36,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:13:36,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:13:36,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:13:36,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:13:36,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:13:36,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:13:36,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:13:36,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:13:36,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:13:36,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:13:36,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:13:36,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:13:36,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:13:36,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:13:36,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:13:36,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:13:36,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:13:36,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:13:36,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:13:36,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d1eccce81af49a59b7ef89939bb8dc0775df56 [2020-12-02 12:13:36,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:13:36,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:13:36,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:13:36,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:13:36,868 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:13:36,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i [2020-12-02 12:13:36,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9a33a14/347dbafb4b194a6796e401b6b0e48d1b/FLAG0b627352a [2020-12-02 12:13:37,734 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:13:37,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i [2020-12-02 12:13:37,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9a33a14/347dbafb4b194a6796e401b6b0e48d1b/FLAG0b627352a [2020-12-02 12:13:38,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9a33a14/347dbafb4b194a6796e401b6b0e48d1b [2020-12-02 12:13:38,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:13:38,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:13:38,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:38,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:13:38,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:13:38,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee25c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38, skipping insertion in model container [2020-12-02 12:13:38,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:13:38,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:13:38,383 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/safe037_power.oepc.i[952,965] [2020-12-02 12:13:38,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:38,568 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:13:38,583 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/safe037_power.oepc.i[952,965] [2020-12-02 12:13:38,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:38,722 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:13:38,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38 WrapperNode [2020-12-02 12:13:38,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:38,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:38,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:13:38,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:13:38,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:38,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:13:38,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:13:38,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:13:38,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (1/1) ... [2020-12-02 12:13:38,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:13:38,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:13:38,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:13:38,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:13:38,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (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 12:13:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:13:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:13:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:13:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:13:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:13:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:13:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:13:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:13:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:13:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:13:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:13:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:13:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:13:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:13:38,915 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 12:13:39,378 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:13:39,379 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:13:39,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:39 BoogieIcfgContainer [2020-12-02 12:13:39,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:13:39,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:13:39,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:13:39,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:13:39,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:13:38" (1/3) ... [2020-12-02 12:13:39,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e92cade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:39, skipping insertion in model container [2020-12-02 12:13:39,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:38" (2/3) ... [2020-12-02 12:13:39,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e92cade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:39, skipping insertion in model container [2020-12-02 12:13:39,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:39" (3/3) ... [2020-12-02 12:13:39,391 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2020-12-02 12:13:39,407 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:13:39,408 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:13:39,417 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:13:39,418 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:13:39,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,451 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,451 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:39,476 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:13:39,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:13:39,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:13:39,513 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:13:39,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:13:39,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:13:39,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:13:39,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:13:39,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:13:39,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:13:39,528 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:13:39,530 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:13:39,534 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:13:39,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-02 12:13:39,584 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-02 12:13:39,585 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:13:39,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:13:39,593 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:13:42,366 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:13:42,662 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:13:43,026 INFO L131 LiptonReduction]: Checked pairs total: 2701 [2020-12-02 12:13:43,026 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-02 12:13:43,035 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-02 12:13:43,063 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:13:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:13:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:13:43,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:43,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:43,074 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash -747620084, now seen corresponding path program 1 times [2020-12-02 12:13:43,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:43,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218916729] [2020-12-02 12:13:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:43,405 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 12:13:43,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218916729] [2020-12-02 12:13:43,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:43,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:13:43,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570043226] [2020-12-02 12:13:43,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:43,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:43,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:43,433 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-12-02 12:13:43,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:43,514 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-12-02 12:13:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:43,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 12:13:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:43,531 INFO L225 Difference]: With dead ends: 281 [2020-12-02 12:13:43,531 INFO L226 Difference]: Without dead ends: 180 [2020-12-02 12:13:43,533 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 12:13:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-02 12:13:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-12-02 12:13:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-02 12:13:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-12-02 12:13:43,594 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-12-02 12:13:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:43,595 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-12-02 12:13:43,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-12-02 12:13:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:13:43,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:43,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:43,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:13:43,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1314201068, now seen corresponding path program 1 times [2020-12-02 12:13:43,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:43,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587277280] [2020-12-02 12:13:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:43,741 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 12:13:43,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587277280] [2020-12-02 12:13:43,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:43,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:43,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468599009] [2020-12-02 12:13:43,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:43,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:43,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:43,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:43,746 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-12-02 12:13:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:43,791 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-12-02 12:13:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:13:43,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:13:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:43,794 INFO L225 Difference]: With dead ends: 163 [2020-12-02 12:13:43,794 INFO L226 Difference]: Without dead ends: 126 [2020-12-02 12:13:43,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:13:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-02 12:13:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-12-02 12:13:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-02 12:13:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-12-02 12:13:43,808 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-12-02 12:13:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:43,809 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-12-02 12:13:43,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-12-02 12:13:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:13:43,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:43,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:43,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:13:43,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2141841880, now seen corresponding path program 1 times [2020-12-02 12:13:43,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:43,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373549084] [2020-12-02 12:13:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:43,957 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 12:13:43,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373549084] [2020-12-02 12:13:43,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:43,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:13:43,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540755747] [2020-12-02 12:13:43,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:13:43,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:43,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:13:43,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:13:43,961 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-12-02 12:13:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:44,014 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-12-02 12:13:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:13:44,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:13:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:44,016 INFO L225 Difference]: With dead ends: 118 [2020-12-02 12:13:44,016 INFO L226 Difference]: Without dead ends: 108 [2020-12-02 12:13:44,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:13:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-02 12:13:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-02 12:13:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-02 12:13:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-12-02 12:13:44,026 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-12-02 12:13:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:44,026 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-12-02 12:13:44,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:13:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-12-02 12:13:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:13:44,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:44,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:44,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:13:44,030 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:44,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1562623596, now seen corresponding path program 1 times [2020-12-02 12:13:44,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:44,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876043230] [2020-12-02 12:13:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:44,160 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 12:13:44,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876043230] [2020-12-02 12:13:44,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:44,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:44,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429421033] [2020-12-02 12:13:44,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:44,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:44,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:44,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:44,169 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-12-02 12:13:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:44,192 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-12-02 12:13:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:13:44,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:13:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:44,194 INFO L225 Difference]: With dead ends: 133 [2020-12-02 12:13:44,194 INFO L226 Difference]: Without dead ends: 54 [2020-12-02 12:13:44,195 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 12:13:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-02 12:13:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-02 12:13:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-02 12:13:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-12-02 12:13:44,205 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-12-02 12:13:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:44,205 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-12-02 12:13:44,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-12-02 12:13:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:13:44,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:44,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:44,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:13:44,208 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:44,211 INFO L82 PathProgramCache]: Analyzing trace with hash -715459562, now seen corresponding path program 2 times [2020-12-02 12:13:44,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:44,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20707614] [2020-12-02 12:13:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:44,293 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 12:13:44,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20707614] [2020-12-02 12:13:44,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:44,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:44,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142849628] [2020-12-02 12:13:44,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:44,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:44,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:44,297 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-12-02 12:13:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:44,311 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-02 12:13:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:13:44,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:13:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:44,312 INFO L225 Difference]: With dead ends: 67 [2020-12-02 12:13:44,313 INFO L226 Difference]: Without dead ends: 30 [2020-12-02 12:13:44,313 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 12:13:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-02 12:13:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-02 12:13:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-02 12:13:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-02 12:13:44,316 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-12-02 12:13:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:44,316 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-02 12:13:44,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-02 12:13:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:13:44,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:44,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:44,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:13:44,318 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1352885548, now seen corresponding path program 3 times [2020-12-02 12:13:44,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:44,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690015158] [2020-12-02 12:13:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:44,367 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 12:13:44,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690015158] [2020-12-02 12:13:44,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:44,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:44,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155146829] [2020-12-02 12:13:44,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:44,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:44,370 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-12-02 12:13:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:44,395 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-12-02 12:13:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:13:44,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:13:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:44,395 INFO L225 Difference]: With dead ends: 29 [2020-12-02 12:13:44,395 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:13:44,396 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 12:13:44,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:13:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:13:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:13:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:13:44,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-02 12:13:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:44,397 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:13:44,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:13:44,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:13:44,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:13:44,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:13:44 BasicIcfg [2020-12-02 12:13:44,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:13:44,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:13:44,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:13:44,404 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:13:44,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:39" (3/4) ... [2020-12-02 12:13:44,410 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:13:44,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:13:44,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:13:44,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:13:44,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:13:44,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:13:44,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:44,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:44,494 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:13:44,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:13:44,499 INFO L168 Benchmark]: Toolchain (without parser) took 6476.51 ms. Allocated memory was 46.1 MB in the beginning and 121.6 MB in the end (delta: 75.5 MB). Free memory was 22.5 MB in the beginning and 95.3 MB in the end (delta: -72.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:44,499 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory is still 20.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:44,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.83 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 33.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:44,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.64 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 31.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:44,503 INFO L168 Benchmark]: Boogie Preprocessor took 29.37 ms. Allocated memory is still 56.6 MB. Free memory was 31.3 MB in the beginning and 29.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:44,505 INFO L168 Benchmark]: RCFGBuilder took 574.58 ms. Allocated memory is still 56.6 MB. Free memory was 29.8 MB in the beginning and 21.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:44,506 INFO L168 Benchmark]: TraceAbstraction took 5020.16 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 21.0 MB in the beginning and 98.4 MB in the end (delta: -77.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:44,506 INFO L168 Benchmark]: Witness Printer took 90.52 ms. Allocated memory is still 121.6 MB. Free memory was 98.4 MB in the beginning and 95.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:44,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory is still 20.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 699.83 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 33.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.64 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 31.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.37 ms. Allocated memory is still 56.6 MB. Free memory was 31.3 MB in the beginning and 29.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 574.58 ms. Allocated memory is still 56.6 MB. Free memory was 29.8 MB in the beginning and 21.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5020.16 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 21.0 MB in the beginning and 98.4 MB in the end (delta: -77.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 90.52 ms. Allocated memory is still 121.6 MB. Free memory was 98.4 MB in the beginning and 95.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 837 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 61 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 84 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2701 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 133 SDtfs, 126 SDslu, 200 SDs, 0 SdLazy, 94 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...