./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin000_pso.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/thin000_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 02f90981fedfb6782d9165385acb8cfadc06132f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:08:51,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:08:51,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:08:51,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:08:51,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:08:51,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:08:51,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:08:51,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:08:51,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:08:51,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:08:51,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:08:51,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:08:51,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:08:51,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:08:51,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:08:51,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:08:51,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:08:51,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:08:51,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:08:51,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:08:51,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:08:51,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:08:51,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:08:51,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:08:51,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:08:51,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:08:51,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:08:51,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:08:51,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:08:51,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:08:51,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:08:51,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:08:51,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:08:51,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:08:51,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:08:51,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:08:51,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:08:51,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:08:51,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:08:51,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:08:51,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:08:51,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:08:51,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:08:51,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:08:51,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:08:51,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:08:51,371 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:08:51,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:08:51,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:08:51,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:08:51,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:08:51,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:08:51,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:08:51,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:08:51,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:08:51,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:08:51,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:08:51,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:08:51,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:08:51,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:08:51,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:08:51,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:08:51,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:08:51,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:08:51,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:08:51,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:08:51,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:08:51,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:08:51,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:08:51,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:08:51,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:08:51,379 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 -> 02f90981fedfb6782d9165385acb8cfadc06132f [2020-10-20 03:08:51,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:08:51,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:08:51,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:08:51,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:08:51,630 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:08:51,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i [2020-10-20 03:08:51,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9ead5d1/955d19dc0a8a412fa5c094ffd38505a1/FLAG274331e03 [2020-10-20 03:08:52,363 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:08:52,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin000_pso.opt.i [2020-10-20 03:08:52,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9ead5d1/955d19dc0a8a412fa5c094ffd38505a1/FLAG274331e03 [2020-10-20 03:08:52,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9ead5d1/955d19dc0a8a412fa5c094ffd38505a1 [2020-10-20 03:08:52,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:08:52,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:08:52,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:08:52,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:08:52,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:08:52,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:08:52" (1/1) ... [2020-10-20 03:08:52,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bf8d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:52, skipping insertion in model container [2020-10-20 03:08:52,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:08:52" (1/1) ... [2020-10-20 03:08:52,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:08:52,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:08:53,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:08:53,015 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:08:53,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:08:53,197 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:08:53,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53 WrapperNode [2020-10-20 03:08:53,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:08:53,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:08:53,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:08:53,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:08:53,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:08:53,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:08:53,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:08:53,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:08:53,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (1/1) ... [2020-10-20 03:08:53,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:08:53,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:08:53,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:08:53,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:08:53,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (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 03:08:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:08:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:08:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:08:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:08:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:08:53,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:08:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:08:53,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:08:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:08:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:08:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:08:53,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:08:53,360 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 03:08:53,693 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:08:53,694 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:08:53,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:53 BoogieIcfgContainer [2020-10-20 03:08:53,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:08:53,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:08:53,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:08:53,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:08:53,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:08:52" (1/3) ... [2020-10-20 03:08:53,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6868b317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:08:53, skipping insertion in model container [2020-10-20 03:08:53,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:53" (2/3) ... [2020-10-20 03:08:53,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6868b317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:08:53, skipping insertion in model container [2020-10-20 03:08:53,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:53" (3/3) ... [2020-10-20 03:08:53,717 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.opt.i [2020-10-20 03:08:53,730 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:08:53,731 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:08:53,742 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:08:53,744 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:08:53,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,783 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,791 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,791 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,793 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,793 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,798 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,798 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:53,808 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:08:53,822 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 03:08:53,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:08:53,844 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:08:53,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:08:53,845 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:08:53,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:08:53,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:08:53,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:08:53,845 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:08:53,859 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:08:53,862 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-20 03:08:53,865 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-20 03:08:53,867 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-20 03:08:53,913 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-20 03:08:53,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:08:53,924 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-20 03:08:53,925 INFO L117 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-20 03:08:55,261 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-20 03:08:55,606 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-20 03:08:55,730 INFO L132 LiptonReduction]: Checked pairs total: 1892 [2020-10-20 03:08:55,730 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-20 03:08:55,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-20 03:08:55,752 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-20 03:08:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-20 03:08:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 03:08:55,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:55,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 03:08:55,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-10-20 03:08:55,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:55,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716100504] [2020-10-20 03:08:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:55,954 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 03:08:55,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716100504] [2020-10-20 03:08:55,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:55,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:55,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774526634] [2020-10-20 03:08:55,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:08:55,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:55,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:08:55,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:08:55,979 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-20 03:08:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:55,997 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-20 03:08:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:08:55,999 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 03:08:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:56,010 INFO L225 Difference]: With dead ends: 90 [2020-10-20 03:08:56,010 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 03:08:56,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:08:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 03:08:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 03:08:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 03:08:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-20 03:08:56,059 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-20 03:08:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:56,060 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-20 03:08:56,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:08:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-20 03:08:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 03:08:56,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:56,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:56,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:08:56,062 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:56,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-10-20 03:08:56,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:56,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434007599] [2020-10-20 03:08:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:56,201 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 03:08:56,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434007599] [2020-10-20 03:08:56,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:56,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:56,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658587389] [2020-10-20 03:08:56,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:56,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:56,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:56,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:56,206 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-20 03:08:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:56,271 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-10-20 03:08:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:56,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 03:08:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:56,275 INFO L225 Difference]: With dead ends: 82 [2020-10-20 03:08:56,275 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 03:08:56,276 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 03:08:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 03:08:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-20 03:08:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 03:08:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-10-20 03:08:56,292 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-10-20 03:08:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:56,293 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-10-20 03:08:56,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-10-20 03:08:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:08:56,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:56,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:56,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:08:56,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-10-20 03:08:56,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:56,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543996717] [2020-10-20 03:08:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:56,433 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 03:08:56,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543996717] [2020-10-20 03:08:56,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:56,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:56,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929176195] [2020-10-20 03:08:56,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:56,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:56,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:56,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:56,436 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-10-20 03:08:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:56,512 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2020-10-20 03:08:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:08:56,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-20 03:08:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:56,514 INFO L225 Difference]: With dead ends: 72 [2020-10-20 03:08:56,514 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 03:08:56,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:08:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 03:08:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-20 03:08:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 03:08:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 122 transitions. [2020-10-20 03:08:56,524 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 122 transitions. Word has length 8 [2020-10-20 03:08:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:56,524 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 122 transitions. [2020-10-20 03:08:56,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 122 transitions. [2020-10-20 03:08:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:08:56,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:56,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:56,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:08:56,526 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1670451402, now seen corresponding path program 1 times [2020-10-20 03:08:56,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:56,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206102267] [2020-10-20 03:08:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:56,584 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 03:08:56,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206102267] [2020-10-20 03:08:56,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:56,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:56,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269639612] [2020-10-20 03:08:56,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:56,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:56,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:56,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:56,586 INFO L87 Difference]: Start difference. First operand 60 states and 122 transitions. Second operand 5 states. [2020-10-20 03:08:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:56,639 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-20 03:08:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:08:56,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 03:08:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:56,642 INFO L225 Difference]: With dead ends: 75 [2020-10-20 03:08:56,642 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 03:08:56,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:08:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 03:08:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-20 03:08:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 03:08:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-10-20 03:08:56,648 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 9 [2020-10-20 03:08:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:56,649 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-10-20 03:08:56,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-10-20 03:08:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:08:56,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:56,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:56,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:08:56,650 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-10-20 03:08:56,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:56,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274061552] [2020-10-20 03:08:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:56,726 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 03:08:56,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274061552] [2020-10-20 03:08:56,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:56,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:56,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966467332] [2020-10-20 03:08:56,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:56,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:56,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:56,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:56,729 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 5 states. [2020-10-20 03:08:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:56,775 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-10-20 03:08:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:08:56,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 03:08:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:56,778 INFO L225 Difference]: With dead ends: 36 [2020-10-20 03:08:56,779 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:08:56,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:08:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:08:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:08:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:08:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:08:56,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-20 03:08:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:56,780 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:08:56,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:08:56,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:08:56,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:08:56,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:08:56 BasicIcfg [2020-10-20 03:08:56,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:08:56,785 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:08:56,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:08:56,786 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:08:56,786 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:53" (3/4) ... [2020-10-20 03:08:56,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:08:56,798 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:08:56,799 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:08:56,803 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 03:08:56,804 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:08:56,804 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:56,804 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:56,862 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:08:56,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:08:56,864 INFO L168 Benchmark]: Toolchain (without parser) took 4364.99 ms. Allocated memory was 43.0 MB in the beginning and 64.0 MB in the end (delta: 21.0 MB). Free memory was 21.8 MB in the beginning and 6.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,865 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 32.5 MB. Free memory is still 11.4 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 03:08:56,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.78 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.9 MB in the beginning and 19.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,872 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.51 ms. Allocated memory is still 45.1 MB. Free memory was 19.2 MB in the beginning and 17.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,884 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 45.1 MB. Free memory was 17.2 MB in the beginning and 15.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,885 INFO L168 Benchmark]: RCFGBuilder took 401.66 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 15.7 MB in the beginning and 13.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,886 INFO L168 Benchmark]: TraceAbstraction took 3083.94 ms. Allocated memory was 45.6 MB in the beginning and 64.0 MB in the end (delta: 18.4 MB). Free memory was 13.0 MB in the beginning and 9.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,887 INFO L168 Benchmark]: Witness Printer took 76.89 ms. Allocated memory is still 64.0 MB. Free memory was 9.1 MB in the beginning and 6.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:56,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 32.5 MB. Free memory is still 11.4 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 694.78 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.9 MB in the beginning and 19.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 72.51 ms. Allocated memory is still 45.1 MB. Free memory was 19.2 MB in the beginning and 17.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 45.1 MB. Free memory was 17.2 MB in the beginning and 15.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 401.66 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 15.7 MB in the beginning and 13.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3083.94 ms. Allocated memory was 45.6 MB in the beginning and 64.0 MB in the end (delta: 18.4 MB). Free memory was 13.0 MB in the beginning and 9.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 14.3 GB. * Witness Printer took 76.89 ms. Allocated memory is still 64.0 MB. Free memory was 9.1 MB in the beginning and 6.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 74 SDtfs, 71 SDslu, 96 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...