./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c6aa79d63d892d225c1a390dc2b1239fe052036 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:07:55,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:07:55,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:07:55,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:07:55,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:07:55,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:07:55,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:07:55,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:07:55,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:07:55,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:07:55,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:07:55,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:07:55,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:07:55,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:07:55,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:07:55,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:07:55,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:07:55,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:07:55,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:07:55,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:07:55,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:07:55,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:07:55,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:07:55,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:07:55,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:07:55,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:07:55,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:07:55,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:07:55,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:07:55,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:07:55,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:07:55,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:07:55,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:07:55,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:07:55,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:07:55,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:07:55,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:07:55,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:07:55,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:07:55,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:07:55,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:07:55,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:07:55,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:07:55,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:07:55,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:07:55,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:07:55,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:07:55,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:07:55,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:07:55,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:07:55,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:07:55,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:07:55,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:07:55,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:07:55,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:07:55,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:07:55,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:07:55,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:07:55,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:07:55,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:07:55,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:07:55,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:07:55,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:07:55,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:07:55,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:07:55,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:07:55,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:07:55,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:07:55,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:07:55,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:07:55,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:07:55,301 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 -> 6c6aa79d63d892d225c1a390dc2b1239fe052036 [2020-10-20 03:07:55,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:07:55,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:07:55,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:07:55,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:07:55,547 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:07:55,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2020-10-20 03:07:55,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099df60cb/2e9132b7389d42c6add7ea2de3a632f9/FLAG979e0d137 [2020-10-20 03:07:56,252 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:07:56,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2020-10-20 03:07:56,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099df60cb/2e9132b7389d42c6add7ea2de3a632f9/FLAG979e0d137 [2020-10-20 03:07:56,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099df60cb/2e9132b7389d42c6add7ea2de3a632f9 [2020-10-20 03:07:56,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:07:56,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:07:56,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:07:56,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:07:56,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:07:56,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:07:56" (1/1) ... [2020-10-20 03:07:56,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bf95df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:56, skipping insertion in model container [2020-10-20 03:07:56,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:07:56" (1/1) ... [2020-10-20 03:07:56,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:07:56,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:07:57,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:07:57,037 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:07:57,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:07:57,211 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:07:57,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57 WrapperNode [2020-10-20 03:07:57,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:07:57,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:07:57,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:07:57,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:07:57,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:07:57,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:07:57,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:07:57,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:07:57,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (1/1) ... [2020-10-20 03:07:57,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:07:57,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:07:57,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:07:57,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:07:57,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (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 03:07:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:07:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:07:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:07:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:07:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:07:57,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:07:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:07:57,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:07:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:07:57,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:07:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:07:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:07:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:07:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:07:57,388 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 03:07:57,741 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:07:57,742 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:07:57,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:07:57 BoogieIcfgContainer [2020-10-20 03:07:57,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:07:57,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:07:57,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:07:57,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:07:57,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:07:56" (1/3) ... [2020-10-20 03:07:57,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7d9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:07:57, skipping insertion in model container [2020-10-20 03:07:57,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:57" (2/3) ... [2020-10-20 03:07:57,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7d9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:07:57, skipping insertion in model container [2020-10-20 03:07:57,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:07:57" (3/3) ... [2020-10-20 03:07:57,753 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-10-20 03:07:57,766 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:07:57,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:07:57,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:07:57,774 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:07:57,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,807 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,809 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,828 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,831 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:57,834 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:07:57,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:07:57,886 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:07:57,886 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:07:57,887 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:07:57,887 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:07:57,887 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:07:57,887 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:07:57,887 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:07:57,887 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:07:57,902 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:07:57,904 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:07:57,907 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:07:57,909 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-20 03:07:57,968 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-20 03:07:57,971 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:07:57,979 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 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. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:07:57,984 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:07:59,752 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-20 03:07:59,866 INFO L132 LiptonReduction]: Checked pairs total: 2814 [2020-10-20 03:07:59,866 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-20 03:07:59,873 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:07:59,903 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:07:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:07:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:07:59,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:59,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:59,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:59,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:59,922 INFO L82 PathProgramCache]: Analyzing trace with hash 515529937, now seen corresponding path program 1 times [2020-10-20 03:07:59,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:59,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359638209] [2020-10-20 03:07:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:00,136 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 03:08:00,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359638209] [2020-10-20 03:08:00,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:00,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:00,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410283364] [2020-10-20 03:08:00,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:08:00,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:00,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:08:00,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:08:00,159 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:08:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:00,191 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:08:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:08:00,193 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:08:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:00,210 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:08:00,210 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:08:00,211 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 03:08:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:08:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:08:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:08:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:08:00,299 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:08:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:00,300 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:08:00,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:08:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:08:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:08:00,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:00,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:00,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:08:00,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1198450655, now seen corresponding path program 1 times [2020-10-20 03:08:00,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:00,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560549469] [2020-10-20 03:08:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:00,432 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 03:08:00,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560549469] [2020-10-20 03:08:00,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:00,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:00,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416087601] [2020-10-20 03:08:00,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:00,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:00,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:00,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:00,436 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-20 03:08:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:00,477 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-20 03:08:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:00,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:08:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:00,482 INFO L225 Difference]: With dead ends: 346 [2020-10-20 03:08:00,482 INFO L226 Difference]: Without dead ends: 282 [2020-10-20 03:08:00,483 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 03:08:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-20 03:08:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-20 03:08:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-20 03:08:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-20 03:08:00,511 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-20 03:08:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:00,512 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-20 03:08:00,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-20 03:08:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:08:00,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:00,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:00,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:08:00,514 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:00,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:00,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1977877749, now seen corresponding path program 1 times [2020-10-20 03:08:00,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:00,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383495429] [2020-10-20 03:08:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:00,636 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 03:08:00,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383495429] [2020-10-20 03:08:00,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:00,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:00,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720576332] [2020-10-20 03:08:00,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:00,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:00,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:00,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:00,643 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-20 03:08:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:00,689 INFO L93 Difference]: Finished difference Result 318 states and 870 transitions. [2020-10-20 03:08:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:00,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:08:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:00,700 INFO L225 Difference]: With dead ends: 318 [2020-10-20 03:08:00,700 INFO L226 Difference]: Without dead ends: 270 [2020-10-20 03:08:00,701 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 03:08:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-20 03:08:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-20 03:08:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-20 03:08:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2020-10-20 03:08:00,737 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 10 [2020-10-20 03:08:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:00,738 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2020-10-20 03:08:00,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2020-10-20 03:08:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:08:00,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:00,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:00,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:08:00,748 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:00,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186363, now seen corresponding path program 1 times [2020-10-20 03:08:00,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:00,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106802771] [2020-10-20 03:08:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:00,849 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 03:08:00,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106802771] [2020-10-20 03:08:00,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:00,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:00,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068652122] [2020-10-20 03:08:00,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:00,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:00,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:00,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:00,852 INFO L87 Difference]: Start difference. First operand 270 states and 760 transitions. Second operand 4 states. [2020-10-20 03:08:00,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:00,891 INFO L93 Difference]: Finished difference Result 273 states and 687 transitions. [2020-10-20 03:08:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:00,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:08:00,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:00,894 INFO L225 Difference]: With dead ends: 273 [2020-10-20 03:08:00,894 INFO L226 Difference]: Without dead ends: 209 [2020-10-20 03:08:00,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-20 03:08:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-10-20 03:08:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-20 03:08:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 516 transitions. [2020-10-20 03:08:00,904 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 516 transitions. Word has length 11 [2020-10-20 03:08:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:00,905 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 516 transitions. [2020-10-20 03:08:00,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 516 transitions. [2020-10-20 03:08:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:08:00,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:00,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:00,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:08:00,907 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:00,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash -497822471, now seen corresponding path program 1 times [2020-10-20 03:08:00,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:00,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017298896] [2020-10-20 03:08:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:08:00,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017298896] [2020-10-20 03:08:00,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:00,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:00,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677472757] [2020-10-20 03:08:00,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:00,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:00,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:00,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:00,959 INFO L87 Difference]: Start difference. First operand 209 states and 516 transitions. Second operand 4 states. [2020-10-20 03:08:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:00,985 INFO L93 Difference]: Finished difference Result 303 states and 706 transitions. [2020-10-20 03:08:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:00,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:08:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:00,987 INFO L225 Difference]: With dead ends: 303 [2020-10-20 03:08:00,988 INFO L226 Difference]: Without dead ends: 223 [2020-10-20 03:08:00,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-20 03:08:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2020-10-20 03:08:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-20 03:08:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 470 transitions. [2020-10-20 03:08:00,996 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 470 transitions. Word has length 12 [2020-10-20 03:08:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:00,996 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 470 transitions. [2020-10-20 03:08:00,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 470 transitions. [2020-10-20 03:08:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:08:00,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:00,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:00,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:08:00,998 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:00,999 INFO L82 PathProgramCache]: Analyzing trace with hash -319232189, now seen corresponding path program 1 times [2020-10-20 03:08:00,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:00,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201968562] [2020-10-20 03:08:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:01,057 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 03:08:01,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201968562] [2020-10-20 03:08:01,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:01,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:08:01,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617109882] [2020-10-20 03:08:01,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:01,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:01,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:01,060 INFO L87 Difference]: Start difference. First operand 199 states and 470 transitions. Second operand 5 states. [2020-10-20 03:08:01,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:01,114 INFO L93 Difference]: Finished difference Result 171 states and 364 transitions. [2020-10-20 03:08:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:08:01,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:08:01,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:01,115 INFO L225 Difference]: With dead ends: 171 [2020-10-20 03:08:01,116 INFO L226 Difference]: Without dead ends: 134 [2020-10-20 03:08:01,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:08:01,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-20 03:08:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-20 03:08:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-20 03:08:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 280 transitions. [2020-10-20 03:08:01,121 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 280 transitions. Word has length 13 [2020-10-20 03:08:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:01,121 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 280 transitions. [2020-10-20 03:08:01,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 280 transitions. [2020-10-20 03:08:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:08:01,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:01,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:01,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:08:01,123 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash 447753789, now seen corresponding path program 1 times [2020-10-20 03:08:01,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:01,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185744853] [2020-10-20 03:08:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:01,174 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 03:08:01,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185744853] [2020-10-20 03:08:01,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:01,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:01,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100804057] [2020-10-20 03:08:01,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:01,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:01,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:01,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:01,177 INFO L87 Difference]: Start difference. First operand 134 states and 280 transitions. Second operand 4 states. [2020-10-20 03:08:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:01,216 INFO L93 Difference]: Finished difference Result 177 states and 347 transitions. [2020-10-20 03:08:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:01,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 03:08:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:01,218 INFO L225 Difference]: With dead ends: 177 [2020-10-20 03:08:01,218 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 03:08:01,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 03:08:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-10-20 03:08:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-20 03:08:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 248 transitions. [2020-10-20 03:08:01,225 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 248 transitions. Word has length 15 [2020-10-20 03:08:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:01,225 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 248 transitions. [2020-10-20 03:08:01,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 248 transitions. [2020-10-20 03:08:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:08:01,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:01,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:01,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:08:01,227 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash 144030791, now seen corresponding path program 1 times [2020-10-20 03:08:01,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:01,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220645300] [2020-10-20 03:08:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:01,325 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 03:08:01,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220645300] [2020-10-20 03:08:01,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:01,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:08:01,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480940687] [2020-10-20 03:08:01,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:08:01,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:08:01,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:08:01,328 INFO L87 Difference]: Start difference. First operand 126 states and 248 transitions. Second operand 6 states. [2020-10-20 03:08:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:01,383 INFO L93 Difference]: Finished difference Result 113 states and 220 transitions. [2020-10-20 03:08:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:08:01,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:08:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:01,385 INFO L225 Difference]: With dead ends: 113 [2020-10-20 03:08:01,385 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 03:08:01,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:08:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 03:08:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 03:08:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 03:08:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-20 03:08:01,388 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 15 [2020-10-20 03:08:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:01,388 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-20 03:08:01,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:08:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-20 03:08:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:08:01,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:01,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:01,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:08:01,389 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:01,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:01,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1289085181, now seen corresponding path program 1 times [2020-10-20 03:08:01,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:01,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752969222] [2020-10-20 03:08:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:01,460 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 03:08:01,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752969222] [2020-10-20 03:08:01,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:01,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:08:01,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892801547] [2020-10-20 03:08:01,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:01,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:01,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:01,462 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-20 03:08:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:01,487 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-20 03:08:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:01,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:08:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:01,488 INFO L225 Difference]: With dead ends: 36 [2020-10-20 03:08:01,488 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:08:01,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:08:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:08:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:08:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:08:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:08:01,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:08:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:01,489 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:08:01,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:08:01,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:08:01,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:08:01,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:08:01 BasicIcfg [2020-10-20 03:08:01,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:08:01,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:08:01,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:08:01,496 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:08:01,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:07:57" (3/4) ... [2020-10-20 03:08:01,501 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:08:01,510 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:08:01,511 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:08:01,511 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:08:01,517 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:08:01,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:08:01,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:01,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:01,569 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:08:01,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:08:01,572 INFO L168 Benchmark]: Toolchain (without parser) took 5026.89 ms. Allocated memory was 41.4 MB in the beginning and 73.4 MB in the end (delta: 32.0 MB). Free memory was 18.3 MB in the beginning and 41.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,572 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.0 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.25 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 17.4 MB in the beginning and 10.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.05 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 10.9 MB in the beginning and 27.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,575 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 ms. Allocated memory is still 44.0 MB. Free memory was 27.7 MB in the beginning and 26.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,576 INFO L168 Benchmark]: RCFGBuilder took 440.78 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 26.1 MB in the beginning and 18.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,577 INFO L168 Benchmark]: TraceAbstraction took 3749.49 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 18.6 MB in the beginning and 45.1 MB in the end (delta: -26.5 MB). Peak memory consumption was 772.9 kB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,577 INFO L168 Benchmark]: Witness Printer took 74.41 ms. Allocated memory is still 73.4 MB. Free memory was 45.1 MB in the beginning and 41.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:01,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.0 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 657.25 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 17.4 MB in the beginning and 10.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 59.05 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 10.9 MB in the beginning and 27.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.91 ms. Allocated memory is still 44.0 MB. Free memory was 27.7 MB in the beginning and 26.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 440.78 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 26.1 MB in the beginning and 18.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3749.49 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 18.6 MB in the beginning and 45.1 MB in the end (delta: -26.5 MB). Peak memory consumption was 772.9 kB. Max. memory is 14.3 GB. * Witness Printer took 74.41 ms. Allocated memory is still 73.4 MB. Free memory was 45.1 MB in the beginning and 41.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 947 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2814 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 211 SDtfs, 164 SDslu, 310 SDs, 0 SdLazy, 117 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...