./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/safe025_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 2cb0904590711f61fe562550478334c4bfa7ca51 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:06:50,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:06:50,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:06:50,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:06:50,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:06:50,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:06:50,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:06:50,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:06:50,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:06:50,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:06:50,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:06:50,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:06:50,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:06:50,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:06:50,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:06:50,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:06:50,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:06:50,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:06:50,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:06:50,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:06:50,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:06:50,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:06:50,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:06:50,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:06:50,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:06:50,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:06:50,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:06:50,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:06:50,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:06:50,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:06:50,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:06:50,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:06:50,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:06:50,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:06:50,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:06:50,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:06:50,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:06:50,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:06:50,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:06:50,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:06:50,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:06:50,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:06:50,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:06:50,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:06:50,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:06:50,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:06:50,472 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:06:50,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:06:50,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:06:50,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:06:50,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:06:50,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:06:50,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:06:50,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:06:50,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:06:50,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:06:50,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:06:50,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:06:50,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:06:50,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:06:50,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:06:50,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:06:50,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:06:50,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:06:50,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:06:50,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:06:50,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:06:50,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:06:50,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:06:50,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:06:50,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:06:50,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 2cb0904590711f61fe562550478334c4bfa7ca51 [2020-10-20 03:06:50,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:06:50,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:06:50,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:06:50,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:06:50,707 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:06:50,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-10-20 03:06:50,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629b4867d/3f7d2b4e49b14845a0311b418a901d01/FLAG730789e2e [2020-10-20 03:06:51,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:06:51,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-10-20 03:06:51,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629b4867d/3f7d2b4e49b14845a0311b418a901d01/FLAG730789e2e [2020-10-20 03:06:51,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629b4867d/3f7d2b4e49b14845a0311b418a901d01 [2020-10-20 03:06:51,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:06:51,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:06:51,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:06:51,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:06:51,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:06:51,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e037be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51, skipping insertion in model container [2020-10-20 03:06:51,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:06:51,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:06:52,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:06:52,169 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:06:52,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:06:52,310 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:06:52,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52 WrapperNode [2020-10-20 03:06:52,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:06:52,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:06:52,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:06:52,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:06:52,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:06:52,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:06:52,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:06:52,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:06:52,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (1/1) ... [2020-10-20 03:06:52,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:06:52,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:06:52,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:06:52,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:06:52,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (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 [2020-10-20 03:06:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:06:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:06:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:06:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:06:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:06:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:06:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:06:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:06:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:06:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:06:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:06:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:06:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:06:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:06:52,491 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:06:52,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:06:52,889 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:06:52,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:52 BoogieIcfgContainer [2020-10-20 03:06:52,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:06:52,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:06:52,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:06:52,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:06:52,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:06:51" (1/3) ... [2020-10-20 03:06:52,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a443975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:52, skipping insertion in model container [2020-10-20 03:06:52,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:52" (2/3) ... [2020-10-20 03:06:52,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a443975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:52, skipping insertion in model container [2020-10-20 03:06:52,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:52" (3/3) ... [2020-10-20 03:06:52,901 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-10-20 03:06:52,916 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:06:52,917 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:06:52,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:06:52,926 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:06:52,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,973 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,973 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,973 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,975 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,975 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,975 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,975 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,976 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,977 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,977 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,977 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,977 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,978 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,982 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,989 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,990 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,990 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,997 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:06:53,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:06:53,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:06:53,036 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:06:53,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:06:53,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:06:53,036 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:06:53,037 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:06:53,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:06:53,037 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:06:53,052 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:06:53,055 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:53,058 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:53,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:53,138 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:06:53,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:06:53,144 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:06:53,147 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:06:55,162 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-20 03:06:55,391 INFO L132 LiptonReduction]: Checked pairs total: 2926 [2020-10-20 03:06:55,391 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:06:55,397 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:06:55,439 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:06:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:06:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:06:55,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-20 03:06:55,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872533577] [2020-10-20 03:06:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:55,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872533577] [2020-10-20 03:06:55,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:55,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157799130] [2020-10-20 03:06:55,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:55,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:55,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:55,713 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:06:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,808 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-20 03:06:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:55,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:06:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,830 INFO L225 Difference]: With dead ends: 282 [2020-10-20 03:06:55,830 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 03:06:55,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 03:06:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 03:06:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 03:06:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-20 03:06:55,902 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-20 03:06:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,903 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-20 03:06:55,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-20 03:06:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:06:55,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:06:55,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,906 INFO L82 PathProgramCache]: Analyzing trace with hash 305615834, now seen corresponding path program 1 times [2020-10-20 03:06:55,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778285727] [2020-10-20 03:06:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:55,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778285727] [2020-10-20 03:06:55,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:55,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174144088] [2020-10-20 03:06:55,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:55,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:55,997 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-20 03:06:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,015 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-20 03:06:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:56,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:06:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,019 INFO L225 Difference]: With dead ends: 202 [2020-10-20 03:06:56,019 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:06:56,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:06:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:06:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:06:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-20 03:06:56,038 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-20 03:06:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,038 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-20 03:06:56,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-20 03:06:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:06:56,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:06:56,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,042 INFO L82 PathProgramCache]: Analyzing trace with hash 839872088, now seen corresponding path program 1 times [2020-10-20 03:06:56,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665871861] [2020-10-20 03:06:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665871861] [2020-10-20 03:06:56,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:56,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245489237] [2020-10-20 03:06:56,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:56,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:56,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:56,099 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-20 03:06:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,107 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-20 03:06:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:56,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 03:06:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,110 INFO L225 Difference]: With dead ends: 194 [2020-10-20 03:06:56,111 INFO L226 Difference]: Without dead ends: 194 [2020-10-20 03:06:56,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-20 03:06:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-20 03:06:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-20 03:06:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-20 03:06:56,142 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-20 03:06:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,143 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-20 03:06:56,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-20 03:06:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:06:56,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:06:56,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-10-20 03:06:56,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024046163] [2020-10-20 03:06:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024046163] [2020-10-20 03:06:56,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:56,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73106400] [2020-10-20 03:06:56,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,223 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-20 03:06:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,263 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-20 03:06:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:56,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:06:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,265 INFO L225 Difference]: With dead ends: 225 [2020-10-20 03:06:56,265 INFO L226 Difference]: Without dead ends: 161 [2020-10-20 03:06:56,266 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 [2020-10-20 03:06:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-20 03:06:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-20 03:06:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 03:06:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-20 03:06:56,276 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-20 03:06:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,277 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-20 03:06:56,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-20 03:06:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:06:56,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:06:56,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash -297551950, now seen corresponding path program 1 times [2020-10-20 03:06:56,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111904260] [2020-10-20 03:06:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111904260] [2020-10-20 03:06:56,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:56,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869457596] [2020-10-20 03:06:56,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:06:56,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:06:56,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:56,341 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-20 03:06:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,392 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-20 03:06:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:06:56,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:06:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,394 INFO L225 Difference]: With dead ends: 160 [2020-10-20 03:06:56,394 INFO L226 Difference]: Without dead ends: 123 [2020-10-20 03:06:56,394 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 [2020-10-20 03:06:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-20 03:06:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-20 03:06:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 03:06:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-20 03:06:56,401 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-20 03:06:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,401 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-20 03:06:56,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:06:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-20 03:06:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:06:56,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:06:56,403 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1813731877, now seen corresponding path program 1 times [2020-10-20 03:06:56,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774520318] [2020-10-20 03:06:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774520318] [2020-10-20 03:06:56,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:06:56,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696512782] [2020-10-20 03:06:56,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:06:56,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:06:56,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:06:56,468 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-20 03:06:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,538 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-20 03:06:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:06:56,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:06:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,542 INFO L225 Difference]: With dead ends: 118 [2020-10-20 03:06:56,542 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 03:06:56,542 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 [2020-10-20 03:06:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 03:06:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-20 03:06:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 03:06:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-20 03:06:56,548 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-20 03:06:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,549 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-20 03:06:56,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:06:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-20 03:06:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:56,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:06:56,551 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1641541318, now seen corresponding path program 1 times [2020-10-20 03:06:56,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786161284] [2020-10-20 03:06:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786161284] [2020-10-20 03:06:56,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:56,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302006902] [2020-10-20 03:06:56,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,595 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-20 03:06:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,613 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-20 03:06:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:56,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,615 INFO L225 Difference]: With dead ends: 133 [2020-10-20 03:06:56,615 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 03:06:56,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 03:06:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-20 03:06:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 03:06:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-20 03:06:56,619 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-20 03:06:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,620 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-20 03:06:56,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-20 03:06:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:56,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:06:56,622 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 2 times [2020-10-20 03:06:56,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203570597] [2020-10-20 03:06:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203570597] [2020-10-20 03:06:56,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:56,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716683556] [2020-10-20 03:06:56,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,675 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-20 03:06:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,698 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-20 03:06:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:56,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,699 INFO L225 Difference]: With dead ends: 63 [2020-10-20 03:06:56,699 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 03:06:56,700 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 [2020-10-20 03:06:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 03:06:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 03:06:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 03:06:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-20 03:06:56,702 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-20 03:06:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,703 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-20 03:06:56,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-20 03:06:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:56,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:06:56,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1534085368, now seen corresponding path program 3 times [2020-10-20 03:06:56,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563494281] [2020-10-20 03:06:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563494281] [2020-10-20 03:06:56,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:56,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375768473] [2020-10-20 03:06:56,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,773 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-20 03:06:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,793 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-10-20 03:06:56,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:56,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,794 INFO L225 Difference]: With dead ends: 51 [2020-10-20 03:06:56,794 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 03:06:56,795 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 [2020-10-20 03:06:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 03:06:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 03:06:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 03:06:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-20 03:06:56,798 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-20 03:06:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,798 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-20 03:06:56,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-20 03:06:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:56,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:56,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:06:56,800 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,800 INFO L82 PathProgramCache]: Analyzing trace with hash 172930902, now seen corresponding path program 4 times [2020-10-20 03:06:56,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596604024] [2020-10-20 03:06:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:56,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596604024] [2020-10-20 03:06:56,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:56,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266029148] [2020-10-20 03:06:56,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,881 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-20 03:06:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,895 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-20 03:06:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:56,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,896 INFO L225 Difference]: With dead ends: 29 [2020-10-20 03:06:56,896 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:06:56,896 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 [2020-10-20 03:06:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:06:56,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:06:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:06:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:06:56,897 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:06:56,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,897 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:06:56,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:06:56,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:06:56,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:06:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:06:56 BasicIcfg [2020-10-20 03:06:56,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:06:56,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:06:56,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:06:56,903 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:06:56,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:52" (3/4) ... [2020-10-20 03:06:56,907 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:06:56,916 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:06:56,916 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:06:56,916 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:06:56,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:06:56,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:06:56,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:56,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:56,976 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:06:56,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:06:56,978 INFO L168 Benchmark]: Toolchain (without parser) took 5322.55 ms. Allocated memory was 34.6 MB in the beginning and 76.0 MB in the end (delta: 41.4 MB). Free memory was 15.1 MB in the beginning and 45.0 MB in the end (delta: -29.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,979 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 33.6 MB. Free memory was 10.7 MB in the beginning and 10.6 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.93 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 14.2 MB in the beginning and 16.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.39 ms. Allocated memory is still 45.1 MB. Free memory was 16.1 MB in the beginning and 13.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,981 INFO L168 Benchmark]: Boogie Preprocessor took 26.56 ms. Allocated memory is still 45.1 MB. Free memory was 13.9 MB in the beginning and 12.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,982 INFO L168 Benchmark]: RCFGBuilder took 477.77 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 12.4 MB in the beginning and 21.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,983 INFO L168 Benchmark]: TraceAbstraction took 4008.78 ms. Allocated memory was 46.7 MB in the beginning and 76.0 MB in the end (delta: 29.4 MB). Free memory was 20.7 MB in the beginning and 48.6 MB in the end (delta: -27.9 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,983 INFO L168 Benchmark]: Witness Printer took 74.33 ms. Allocated memory is still 76.0 MB. Free memory was 48.6 MB in the beginning and 45.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 33.6 MB. Free memory was 10.7 MB in the beginning and 10.6 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 648.93 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 14.2 MB in the beginning and 16.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 74.39 ms. Allocated memory is still 45.1 MB. Free memory was 16.1 MB in the beginning and 13.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.56 ms. Allocated memory is still 45.1 MB. Free memory was 13.9 MB in the beginning and 12.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 477.77 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 12.4 MB in the beginning and 21.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4008.78 ms. Allocated memory was 46.7 MB in the beginning and 76.0 MB in the end (delta: 29.4 MB). Free memory was 20.7 MB in the beginning and 48.6 MB in the end (delta: -27.9 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Witness Printer took 74.33 ms. Allocated memory is still 76.0 MB. Free memory was 48.6 MB in the beginning and 45.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1015 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 206 SDtfs, 147 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...