./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/safe020_pso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49b5fd9c76ac6ad95191b3c7b3f7f12fe89c1f9b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:31:15,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:31:15,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:31:15,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:31:15,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:31:15,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:31:15,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:31:15,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:31:15,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:31:15,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:31:15,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:31:15,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:31:15,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:31:15,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:31:15,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:31:15,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:31:15,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:31:15,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:31:15,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:31:15,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:31:15,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:31:15,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:31:15,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:31:15,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:31:15,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:31:15,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:31:15,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:31:15,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:31:15,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:31:15,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:31:15,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:31:15,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:31:15,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:31:15,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:31:15,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:31:15,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:31:15,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:31:15,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:31:15,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:31:15,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:31:15,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:31:15,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:31:15,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:31:15,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:31:15,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:31:15,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:31:15,451 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:31:15,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:31:15,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:31:15,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:31:15,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:31:15,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:31:15,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:31:15,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:31:15,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:31:15,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:31:15,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:31:15,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:31:15,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:31:15,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:31:15,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:31:15,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:31:15,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:31:15,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:31:15,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:31:15,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:31:15,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:31:15,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:31:15,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:31:15,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:31:15,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:31:15,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49b5fd9c76ac6ad95191b3c7b3f7f12fe89c1f9b [2020-10-26 00:31:15,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:31:15,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:31:15,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:31:15,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:31:15,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:31:15,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i [2020-10-26 00:31:16,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d523ed0b/af150342687849ebbeeae812626cbeb6/FLAG7e343005d [2020-10-26 00:31:16,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:31:16,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i [2020-10-26 00:31:16,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d523ed0b/af150342687849ebbeeae812626cbeb6/FLAG7e343005d [2020-10-26 00:31:16,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d523ed0b/af150342687849ebbeeae812626cbeb6 [2020-10-26 00:31:16,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:31:16,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:31:16,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:31:16,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:31:17,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:31:17,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:31:16" (1/1) ... [2020-10-26 00:31:17,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0dbe8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17, skipping insertion in model container [2020-10-26 00:31:17,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:31:16" (1/1) ... [2020-10-26 00:31:17,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:31:17,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:31:17,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:31:17,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:31:17,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:31:17,757 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:31:17,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17 WrapperNode [2020-10-26 00:31:17,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:31:17,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:31:17,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:31:17,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:31:17,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:31:17,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:31:17,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:31:17,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:31:17,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (1/1) ... [2020-10-26 00:31:17,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:31:17,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:31:17,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:31:17,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:31:17,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (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 [2020-10-26 00:31:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:31:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:31:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:31:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:31:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:31:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:31:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:31:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:31:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:31:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:31:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:31:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:31:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:31:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:31:17,944 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:31:18,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:31:18,390 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:31:18,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:31:18 BoogieIcfgContainer [2020-10-26 00:31:18,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:31:18,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:31:18,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:31:18,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:31:18,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:31:16" (1/3) ... [2020-10-26 00:31:18,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df93d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:31:18, skipping insertion in model container [2020-10-26 00:31:18,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:31:17" (2/3) ... [2020-10-26 00:31:18,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df93d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:31:18, skipping insertion in model container [2020-10-26 00:31:18,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:31:18" (3/3) ... [2020-10-26 00:31:18,402 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-10-26 00:31:18,414 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:31:18,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:31:18,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:31:18,422 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:31:18,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,475 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,475 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,479 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,479 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:31:18,484 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:31:18,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:31:18,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:31:18,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:31:18,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:31:18,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:31:18,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:31:18,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:31:18,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:31:18,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:31:18,534 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:31:18,536 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-26 00:31:18,539 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-26 00:31:18,541 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-26 00:31:18,590 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-26 00:31:18,591 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:31:18,595 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-26 00:31:18,598 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-26 00:31:20,724 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-26 00:31:20,952 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-10-26 00:31:21,331 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-26 00:31:21,445 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 00:31:21,719 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:31:21,839 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:31:21,860 INFO L131 LiptonReduction]: Checked pairs total: 3056 [2020-10-26 00:31:21,861 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-10-26 00:31:21,868 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-10-26 00:31:21,890 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-26 00:31:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-26 00:31:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:31:21,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:21,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:21,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-10-26 00:31:21,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:21,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075180868] [2020-10-26 00:31:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:22,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075180868] [2020-10-26 00:31:22,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:22,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:31:22,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260344205] [2020-10-26 00:31:22,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:31:22,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:22,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:31:22,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:31:22,236 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-26 00:31:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:22,285 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-26 00:31:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:31:22,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-26 00:31:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:22,302 INFO L225 Difference]: With dead ends: 220 [2020-10-26 00:31:22,303 INFO L226 Difference]: Without dead ends: 172 [2020-10-26 00:31:22,304 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 [2020-10-26 00:31:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-26 00:31:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-26 00:31:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-26 00:31:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-26 00:31:22,378 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-26 00:31:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:22,379 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-26 00:31:22,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:31:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-26 00:31:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:31:22,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:22,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:22,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:31:22,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:22,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:22,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-10-26 00:31:22,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:22,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168203849] [2020-10-26 00:31:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:22,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168203849] [2020-10-26 00:31:22,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:22,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:31:22,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243487725] [2020-10-26 00:31:22,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:31:22,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:22,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:31:22,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:31:22,527 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-26 00:31:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:22,544 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-26 00:31:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:31:22,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 00:31:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:22,555 INFO L225 Difference]: With dead ends: 163 [2020-10-26 00:31:22,555 INFO L226 Difference]: Without dead ends: 163 [2020-10-26 00:31:22,557 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 [2020-10-26 00:31:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-26 00:31:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-26 00:31:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-26 00:31:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-26 00:31:22,596 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-26 00:31:22,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:22,597 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-26 00:31:22,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:31:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-26 00:31:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:31:22,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:22,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:22,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:31:22,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:22,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:22,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-10-26 00:31:22,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:22,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762341971] [2020-10-26 00:31:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:22,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762341971] [2020-10-26 00:31:22,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:22,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:22,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161982193] [2020-10-26 00:31:22,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:31:22,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:22,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:31:22,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:31:22,721 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-10-26 00:31:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:22,737 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-10-26 00:31:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:31:22,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 00:31:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:22,741 INFO L225 Difference]: With dead ends: 211 [2020-10-26 00:31:22,741 INFO L226 Difference]: Without dead ends: 175 [2020-10-26 00:31:22,742 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 [2020-10-26 00:31:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-26 00:31:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-10-26 00:31:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-26 00:31:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-10-26 00:31:22,758 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-10-26 00:31:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:22,759 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-10-26 00:31:22,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:31:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-10-26 00:31:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:31:22,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:22,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:22,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:31:22,761 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:22,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-10-26 00:31:22,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:22,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837191169] [2020-10-26 00:31:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:22,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837191169] [2020-10-26 00:31:22,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:22,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:22,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828470443] [2020-10-26 00:31:22,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:22,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:22,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:22,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:22,825 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-10-26 00:31:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:22,859 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-10-26 00:31:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:31:22,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 00:31:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:22,862 INFO L225 Difference]: With dead ends: 196 [2020-10-26 00:31:22,862 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 00:31:22,862 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 [2020-10-26 00:31:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 00:31:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-26 00:31:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-26 00:31:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-10-26 00:31:22,872 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-10-26 00:31:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:22,873 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-10-26 00:31:22,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-10-26 00:31:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:31:22,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:22,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:22,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:31:22,875 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:22,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-10-26 00:31:22,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:22,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121609768] [2020-10-26 00:31:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:22,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121609768] [2020-10-26 00:31:22,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:22,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:22,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735824671] [2020-10-26 00:31:22,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:22,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:22,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:22,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:22,973 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-10-26 00:31:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:23,028 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-10-26 00:31:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:31:23,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:31:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:23,034 INFO L225 Difference]: With dead ends: 144 [2020-10-26 00:31:23,034 INFO L226 Difference]: Without dead ends: 108 [2020-10-26 00:31:23,034 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 [2020-10-26 00:31:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-26 00:31:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-26 00:31:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-26 00:31:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-10-26 00:31:23,042 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-10-26 00:31:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:23,043 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-10-26 00:31:23,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-10-26 00:31:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:31:23,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:23,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:23,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:31:23,045 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:23,045 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-10-26 00:31:23,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:23,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729935954] [2020-10-26 00:31:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:23,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729935954] [2020-10-26 00:31:23,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:23,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:23,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429822094] [2020-10-26 00:31:23,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:23,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:23,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:23,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:23,206 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-10-26 00:31:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:23,289 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-10-26 00:31:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:23,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 00:31:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:23,290 INFO L225 Difference]: With dead ends: 108 [2020-10-26 00:31:23,290 INFO L226 Difference]: Without dead ends: 84 [2020-10-26 00:31:23,291 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 [2020-10-26 00:31:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-26 00:31:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-26 00:31:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-26 00:31:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-10-26 00:31:23,296 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-10-26 00:31:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:23,296 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-10-26 00:31:23,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-10-26 00:31:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:31:23,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:23,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:23,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:31:23,298 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:23,298 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-10-26 00:31:23,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:23,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550550757] [2020-10-26 00:31:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:23,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550550757] [2020-10-26 00:31:23,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:23,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:31:23,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126548620] [2020-10-26 00:31:23,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:31:23,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:23,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:31:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:31:23,404 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-10-26 00:31:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:23,483 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-10-26 00:31:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:31:23,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-26 00:31:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:23,484 INFO L225 Difference]: With dead ends: 80 [2020-10-26 00:31:23,484 INFO L226 Difference]: Without dead ends: 33 [2020-10-26 00:31:23,485 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 [2020-10-26 00:31:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-26 00:31:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-26 00:31:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 00:31:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-10-26 00:31:23,488 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-10-26 00:31:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:23,488 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-10-26 00:31:23,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:31:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-10-26 00:31:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:31:23,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:23,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:23,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:31:23,490 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:23,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-10-26 00:31:23,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:23,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427685482] [2020-10-26 00:31:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:31:23,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427685482] [2020-10-26 00:31:23,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:23,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:23,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783909116] [2020-10-26 00:31:23,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:23,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:23,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:23,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:23,553 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-10-26 00:31:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:23,586 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-10-26 00:31:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:31:23,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-26 00:31:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:23,586 INFO L225 Difference]: With dead ends: 32 [2020-10-26 00:31:23,587 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:31:23,587 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 [2020-10-26 00:31:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:31:23,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:31:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:31:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:31:23,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-26 00:31:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:23,593 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:31:23,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:31:23,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:31:23,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:31:23,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:31:23 BasicIcfg [2020-10-26 00:31:23,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:31:23,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:31:23,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:31:23,604 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:31:23,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:31:18" (3/4) ... [2020-10-26 00:31:23,611 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:31:23,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:31:23,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:31:23,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:31:23,628 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:31:23,629 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:31:23,629 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:31:23,629 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:31:23,704 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:31:23,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:31:23,706 INFO L168 Benchmark]: Toolchain (without parser) took 6716.90 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 23.8 MB in the beginning and 37.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:23,707 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 48.2 MB. Free memory was 34.5 MB in the beginning and 34.5 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:31:23,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.60 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 34.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:23,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.98 ms. Allocated memory is still 58.7 MB. Free memory was 34.4 MB in the beginning and 32.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:23,708 INFO L168 Benchmark]: Boogie Preprocessor took 32.25 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 31.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:31:23,709 INFO L168 Benchmark]: RCFGBuilder took 544.54 ms. Allocated memory is still 58.7 MB. Free memory was 31.0 MB in the beginning and 23.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:23,710 INFO L168 Benchmark]: TraceAbstraction took 5208.48 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 23.0 MB in the beginning and 40.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:23,710 INFO L168 Benchmark]: Witness Printer took 100.78 ms. Allocated memory is still 104.9 MB. Free memory was 40.3 MB in the beginning and 37.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:23,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 48.2 MB. Free memory was 34.5 MB in the beginning and 34.5 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 761.60 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 34.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.98 ms. Allocated memory is still 58.7 MB. Free memory was 34.4 MB in the beginning and 32.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.25 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 31.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 544.54 ms. Allocated memory is still 58.7 MB. Free memory was 31.0 MB in the beginning and 23.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5208.48 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 23.0 MB in the beginning and 40.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 100.78 ms. Allocated memory is still 104.9 MB. Free memory was 40.3 MB in the beginning and 37.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...