./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_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/safe012_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 27779e81c0fa7ebfefcaf756900ad8a5caf59b29 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:04:34,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:04:34,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:04:34,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:04:34,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:04:34,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:04:34,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:04:34,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:04:34,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:04:34,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:04:34,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:04:34,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:04:34,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:04:34,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:04:34,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:04:34,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:04:34,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:04:34,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:04:34,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:04:34,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:04:34,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:04:34,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:04:34,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:04:34,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:04:34,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:04:34,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:04:34,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:04:34,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:04:34,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:04:34,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:04:34,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:04:34,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:04:34,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:04:34,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:04:34,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:04:34,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:04:34,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:04:34,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:04:34,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:04:34,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:04:34,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:04:34,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:04:34,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:04:34,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:04:34,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:04:34,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:04:34,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:04:34,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:04:34,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:04:34,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:04:34,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:04:34,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:04:34,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:04:34,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:04:34,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:04:34,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:04:34,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:04:34,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:04:34,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:04:34,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:04:34,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:04:34,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:04:34,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:04:34,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:04:34,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:04:34,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:04:34,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:04:34,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:04:34,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:04:34,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:04:34,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:04:34,217 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 -> 27779e81c0fa7ebfefcaf756900ad8a5caf59b29 [2020-10-20 03:04:34,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:04:34,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:04:34,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:04:34,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:04:34,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:04:34,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.opt.i [2020-10-20 03:04:34,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd2afc9b/3f23ad88173a4b3e858c63cc0d3f2ff4/FLAGe1341606c [2020-10-20 03:04:35,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:04:35,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.opt.i [2020-10-20 03:04:35,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd2afc9b/3f23ad88173a4b3e858c63cc0d3f2ff4/FLAGe1341606c [2020-10-20 03:04:35,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd2afc9b/3f23ad88173a4b3e858c63cc0d3f2ff4 [2020-10-20 03:04:35,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:04:35,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:04:35,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:35,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:04:35,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:04:35,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:35" (1/1) ... [2020-10-20 03:04:35,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f321084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:35, skipping insertion in model container [2020-10-20 03:04:35,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:35" (1/1) ... [2020-10-20 03:04:35,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:04:35,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:04:36,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:36,058 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:04:36,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:36,204 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:04:36,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36 WrapperNode [2020-10-20 03:04:36,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:36,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:36,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:04:36,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:04:36,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:36,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:04:36,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:04:36,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:04:36,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (1/1) ... [2020-10-20 03:04:36,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:04:36,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:04:36,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:04:36,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:04:36,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (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 03:04:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:04:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:04:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:04:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:04:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:04:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:04:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:04:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:04:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:04:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:04:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:04:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:04:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:04:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:04:36,362 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 03:04:36,741 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:04:36,741 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:04:36,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:36 BoogieIcfgContainer [2020-10-20 03:04:36,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:04:36,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:04:36,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:04:36,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:04:36,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:04:35" (1/3) ... [2020-10-20 03:04:36,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3413be1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:36, skipping insertion in model container [2020-10-20 03:04:36,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:36" (2/3) ... [2020-10-20 03:04:36,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3413be1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:36, skipping insertion in model container [2020-10-20 03:04:36,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:36" (3/3) ... [2020-10-20 03:04:36,752 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-20 03:04:36,763 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:04:36,764 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:04:36,771 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:04:36,772 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:04:36,801 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,801 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,801 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,802 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,802 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,803 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,803 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,803 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,804 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,804 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,805 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,806 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,806 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,807 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,807 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,812 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,812 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,818 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,818 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:36,827 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:04:36,841 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:04:36,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:04:36,861 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:04:36,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:04:36,862 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:04:36,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:04:36,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:04:36,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:04:36,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:04:36,876 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:04:36,879 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-20 03:04:36,882 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-20 03:04:36,884 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-10-20 03:04:36,934 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-20 03:04:36,934 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:04:36,940 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:04:36,943 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:04:38,978 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-20 03:04:39,186 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-20 03:04:39,187 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-20 03:04:39,193 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:04:39,220 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:04:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:04:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:04:39,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:39,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:39,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-10-20 03:04:39,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:39,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343647822] [2020-10-20 03:04:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:39,453 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 03:04:39,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343647822] [2020-10-20 03:04:39,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:39,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:04:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002175684] [2020-10-20 03:04:39,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:39,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:39,477 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:04:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:39,525 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-20 03:04:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:39,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:04:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:39,542 INFO L225 Difference]: With dead ends: 282 [2020-10-20 03:04:39,542 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 03:04:39,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 03:04:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 03:04:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 03:04:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-20 03:04:39,606 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-20 03:04:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:39,608 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-20 03:04:39,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-20 03:04:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:04:39,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:39,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:39,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:04:39,610 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash -700352928, now seen corresponding path program 1 times [2020-10-20 03:04:39,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:39,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011212984] [2020-10-20 03:04:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:39,699 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 03:04:39,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011212984] [2020-10-20 03:04:39,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:39,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:39,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485166368] [2020-10-20 03:04:39,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:39,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:39,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:39,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:39,704 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-20 03:04:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:39,732 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-20 03:04:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:39,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:04:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:39,736 INFO L225 Difference]: With dead ends: 242 [2020-10-20 03:04:39,736 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 03:04:39,737 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 03:04:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 03:04:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-20 03:04:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 03:04:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-20 03:04:39,752 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-20 03:04:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:39,752 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-20 03:04:39,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-20 03:04:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:04:39,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:39,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:39,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:04:39,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:39,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2063010818, now seen corresponding path program 1 times [2020-10-20 03:04:39,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:39,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251883151] [2020-10-20 03:04:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:39,867 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 03:04:39,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251883151] [2020-10-20 03:04:39,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:39,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:04:39,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089716479] [2020-10-20 03:04:39,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:39,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:39,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:39,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:39,869 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-20 03:04:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:39,876 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-10-20 03:04:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:39,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 03:04:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:39,879 INFO L225 Difference]: With dead ends: 140 [2020-10-20 03:04:39,879 INFO L226 Difference]: Without dead ends: 140 [2020-10-20 03:04:39,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:39,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-20 03:04:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-20 03:04:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-20 03:04:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-10-20 03:04:39,891 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-10-20 03:04:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:39,891 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-10-20 03:04:39,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-10-20 03:04:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:04:39,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:39,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:39,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:04:39,895 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1374781277, now seen corresponding path program 1 times [2020-10-20 03:04:39,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:39,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703373792] [2020-10-20 03:04:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:39,944 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 03:04:39,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703373792] [2020-10-20 03:04:39,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:39,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:39,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658268781] [2020-10-20 03:04:39,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:39,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:39,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:39,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:39,947 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-10-20 03:04:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:39,964 INFO L93 Difference]: Finished difference Result 158 states and 376 transitions. [2020-10-20 03:04:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:39,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:04:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:39,966 INFO L225 Difference]: With dead ends: 158 [2020-10-20 03:04:39,966 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 03:04:39,966 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 03:04:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 03:04:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-20 03:04:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 03:04:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-20 03:04:39,973 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-20 03:04:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:39,973 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-20 03:04:39,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-20 03:04:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:39,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:39,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:39,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:04:39,975 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:39,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1721558133, now seen corresponding path program 1 times [2020-10-20 03:04:39,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:39,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078592361] [2020-10-20 03:04:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:40,042 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 03:04:40,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078592361] [2020-10-20 03:04:40,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:40,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:40,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774520318] [2020-10-20 03:04:40,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:40,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:40,045 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-20 03:04:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:40,072 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-20 03:04:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:40,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:04:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:40,073 INFO L225 Difference]: With dead ends: 81 [2020-10-20 03:04:40,073 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 03:04:40,074 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 03:04:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 03:04:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-20 03:04:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 03:04:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-20 03:04:40,078 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-20 03:04:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:40,078 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-20 03:04:40,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-20 03:04:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:04:40,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:40,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:40,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:04:40,080 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1881599875, now seen corresponding path program 1 times [2020-10-20 03:04:40,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:40,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565593570] [2020-10-20 03:04:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:40,145 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 03:04:40,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565593570] [2020-10-20 03:04:40,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:40,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:40,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20898694] [2020-10-20 03:04:40,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:40,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:40,148 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-20 03:04:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:40,270 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-20 03:04:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:40,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:04:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:40,273 INFO L225 Difference]: With dead ends: 60 [2020-10-20 03:04:40,273 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 03:04:40,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 03:04:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 03:04:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 03:04:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-20 03:04:40,277 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-20 03:04:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:40,277 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-20 03:04:40,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-20 03:04:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:04:40,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:40,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:40,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:04:40,280 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:40,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1799830367, now seen corresponding path program 1 times [2020-10-20 03:04:40,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:40,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179721993] [2020-10-20 03:04:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:40,346 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 03:04:40,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179721993] [2020-10-20 03:04:40,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:40,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:40,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079461973] [2020-10-20 03:04:40,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:40,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:40,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:40,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:40,349 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-20 03:04:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:40,397 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-20 03:04:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:04:40,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:04:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:40,398 INFO L225 Difference]: With dead ends: 42 [2020-10-20 03:04:40,398 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 03:04:40,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 03:04:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 03:04:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 03:04:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-20 03:04:40,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-20 03:04:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:40,401 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-20 03:04:40,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-20 03:04:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:04:40,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:40,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:40,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:04:40,403 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1269131745, now seen corresponding path program 1 times [2020-10-20 03:04:40,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:40,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31347654] [2020-10-20 03:04:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:40,440 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 03:04:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31347654] [2020-10-20 03:04:40,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:40,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:40,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659968583] [2020-10-20 03:04:40,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:40,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:40,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:40,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:40,443 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-20 03:04:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:40,454 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-20 03:04:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:40,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:04:40,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:40,455 INFO L225 Difference]: With dead ends: 35 [2020-10-20 03:04:40,455 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:04:40,455 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 03:04:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:04:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:04:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:04:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:04:40,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:04:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:40,456 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:04:40,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:04:40,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:04:40,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:04:40,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:04:40 BasicIcfg [2020-10-20 03:04:40,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:04:40,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:04:40,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:04:40,462 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:04:40,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:36" (3/4) ... [2020-10-20 03:04:40,466 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:04:40,473 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:04:40,474 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:04:40,474 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:04:40,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:04:40,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:04:40,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:40,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:40,526 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:04:40,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:04:40,528 INFO L168 Benchmark]: Toolchain (without parser) took 5050.18 ms. Allocated memory was 41.4 MB in the beginning and 77.1 MB in the end (delta: 35.7 MB). Free memory was 20.4 MB in the beginning and 22.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,529 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 32.0 MB. Free memory was 11.0 MB in the beginning and 11.0 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.88 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 19.5 MB in the beginning and 17.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.76 ms. Allocated memory is still 44.6 MB. Free memory was 17.2 MB in the beginning and 15.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,531 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 44.6 MB. Free memory was 15.1 MB in the beginning and 13.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,531 INFO L168 Benchmark]: RCFGBuilder took 464.92 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 13.4 MB in the beginning and 28.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,532 INFO L168 Benchmark]: TraceAbstraction took 3716.59 ms. Allocated memory was 47.2 MB in the beginning and 77.1 MB in the end (delta: 29.9 MB). Free memory was 27.6 MB in the beginning and 26.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,533 INFO L168 Benchmark]: Witness Printer took 64.45 ms. Allocated memory is still 77.1 MB. Free memory was 26.6 MB in the beginning and 22.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:40,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 32.0 MB. Free memory was 11.0 MB in the beginning and 11.0 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 721.88 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 19.5 MB in the beginning and 17.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.76 ms. Allocated memory is still 44.6 MB. Free memory was 17.2 MB in the beginning and 15.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 44.6 MB. Free memory was 15.1 MB in the beginning and 13.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 464.92 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 13.4 MB in the beginning and 28.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3716.59 ms. Allocated memory was 47.2 MB in the beginning and 77.1 MB in the end (delta: 29.9 MB). Free memory was 27.6 MB in the beginning and 26.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.3 GB. * Witness Printer took 64.45 ms. Allocated memory is still 77.1 MB. Free memory was 26.6 MB in the beginning and 22.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1064 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 90 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 136 SDtfs, 121 SDslu, 149 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...